Light lamp for vehicle

ABSTRACT

A light lamp for vehicle includes a plurality of light function modules, each of the plurality of light function modules including: a light source module including a light source; a dissipation module disposed behind the light source module and configured to dissipate heat generated by the light source; and a light distribution module disposed in front of the light source module and configured to distribute light emitted by the light source module, the light distribution module including: a focusing lens configured to concentrate incident light; a shield retainer assembly configured to block at least part of light output by the focusing lens and to reflect at least part of light that is not blocked; a light distribution case configured to accommodate the focusing lens and the shield retainer assembly; and a light distribution cover configured to cover the light distribution case.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims an earlier filing date and the right of priorityto Korean Patent Application No. 10-2016-0153338, filed on Nov. 17,2016, the contents of which are incorporated herein by reference in itsentirety.

TECHNICAL FIELD

The present disclosure relates to a light lamp for a vehicle whichincludes a light function module composed of a light source module, alight distribution module, and a dissipation module.

BACKGROUND

A lighting device, such as a lamp, is installed in a vehicle to helpprovide a field of vision to a driver by providing illumination ofobject near the vehicle and notify a current driving state of thevehicle to the outside, such as to other vehicles or pedestrians.

The lighting device installed in the vehicle (hereinafter, referred toas a lighting device for a vehicle) may include a head lamp which emitslight in a forward direction of the vehicle, and a rear lamp whichindicates the direction of travel of the vehicle or application of abrake.

The lighting device for a vehicle may form a low beam or a high beam toprovide outward visibility to a driver during night driving situations.Recently, light-emitting diodes (LEDs) having high power efficiency anda long lifespan have been increasingly incorporated into the lightingdevice for a vehicle.

A laser diode having a longer irradiation distance than that of an LEDmay also be used as a light source of the lighting device for a vehicle.

SUMMARY

Implementations disclosed herein provide a light lamp for a vehicle thatincludes a plurality of light function modules. In some implementations,each light function module includes components that are arranged toprovide a light lamp that is more compact, efficient, and/or functional.

In one aspect, a light lamp for vehicle includes a plurality of lightfunction modules, each of the plurality of light function modulesincluding: a light source module including a light source; a dissipationmodule disposed behind the light source module and configured todissipate heat generated by the light source; and a light distributionmodule disposed in front of the light source module and configured todistribute light emitted by the light source module, the lightdistribution module including: a focusing lens configured to concentrateincident light; a shield retainer assembly configured to block at leastpart of light output by the focusing lens and to reflect at least partof light that is not blocked; a light distribution case configured toaccommodate the focusing lens and the shield retainer assembly; and alight distribution cover configured to cover the light distributioncase.

Implementations may include one or more of the following features. Forexample, the light distribution module further includes a collimatorlens configured to collimate light incident from the light source moduleto form parallel light rays, wherein the light distribution caseincludes: a light distribution head part having a collimator lensaccommodating space and a collimator lens insertion hole formed at arear of the light distribution head part; and a light distribution tailpart connected to a front of the light distribution head part, andwherein the collimator lens is configured to be mounted in thecollimator lens accommodating space.

In some implementations, the light distribution cover is configured tocover the light distribution tail part.

In some implementations, the focusing lens is disposed in front of thecollimator lens, and a front surface of the collimator lens and a rearsurface of the focusing lens are disposed to face each other.

In some implementations, the light source module is coupled to a rearsurface of the light distribution head part, and the light distributionmodule further includes a collimator lens retainer configured to fix thecollimator lens to the light distribution head part.

In some implementations, the light source module is disposed behind thecollimator lens retainer, and further includes a diffuser that faces arear surface of the collimator lens.

In some implementations, the focusing lens is disposed between the lightdistribution case and the light distribution cover, and is disposed infront of the collimator lens.

In some implementations, the light distribution case further includes afocusing lens mounting groove, wherein the focusing lens is configuredto be mounted in the focusing lens mounting groove and is constrained ina longitudinal direction of the light distribution case.

In some implementations, the light distribution cover further includes afocusing lens mounting groove, wherein the focusing lens is configuredto be mounted in the focusing lens mounting groove and is constrained ina longitudinal direction of the light distribution cover.

In some implementations, the shield retainer assembly is disposedbetween the light distribution case and the light distribution cover,and is disposed in front of the focusing lens.

In some implementations, the shield retainer assembly includes: amirror; a mirror mounting part in which the mirror is configured to bemounted; and a shield having at least one opening formed therein,wherein the mirror mounting part and the shield are orthogonal to eachother.

In some implementations, the shield is disposed to face a front surfaceof the focusing lens.

In some implementations, the light distribution case further includes amounting part protruding from an inner surface of the light distributioncase, wherein the shield further includes a fixing part that is spacedapart from the at least one opening of the shield, and wherein thefixing part is fixed to the mounting part.

In some implementations, the light distribution module further includes:a side-surface hole formed on a side surface of the light distributioncase; and a horizontally moving coupler inserted into the side-surfacehole, wherein the horizontally moving coupler is configured to press aside surface of the mirror mounting part in a horizontal direction.

In some implementations, the light distribution module further includes:a bottom-surface hole formed in a bottom surface of the lightdistribution case; and a vertically moving coupler inserted into thebottom-surface hole, wherein the vertically moving coupler is configuredto press a bottom surface of the mirror mounting part in a verticaldirection.

In some implementations, the light distribution module further includesa support clip fixed to an inner side surface of the light distributioncase, wherein the support clip is configured to press a top surface ofthe mirror mounting part in a downward direction.

In some implementations, the light distribution module further includesa projection lens, wherein the projection lens is disposed between thelight distribution case and the light distribution cover, and isdisposed in front of the shield retainer assembly.

In some implementations, the light distribution case further includes aprojection lens mounting groove, wherein the projection lens isconfigured to be mounted in the projection lens mounting groove, and isconstrained in a longitudinal direction of the light distribution case.

In some implementations, the light distribution cover further includes aprojection lens mounting groove, wherein the projection lens isconfigured to be mounted in the projection lens mounting groove, and isconstrained in a longitudinal direction of the light distribution cover.

In another aspect, a vehicle includes a plurality of wheels; a powersource configured to drive at least one of the plurality of wheels; andthe light lamp.

The details of one or more implementations are set forth in theaccompanying drawings and the description below. Other features will beapparent from the description and drawings, and from the claims. Thedescription and specific examples below are given by way of illustrationonly, and various changes and modifications will be apparent.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view illustrating an example of a light lamp fora vehicle according to an implementation of the present disclosure;

FIG. 2 is a perspective view illustrating the interior of the light lampshown in FIG. 1;

FIG. 3 is a perspective view illustrating an example of first and secondlight function modules shown in FIG. 2;

FIG. 4 is an exploded perspective view illustrating the first and secondlight function modules shown in FIG. 3;

FIG. 5 is a first perspective view illustrating the light distributionmodule shown in FIG. 3 in a detached state from a light source module;

FIG. 6 is a second perspective view illustrating the light distributionmodule shown in FIG. 3;

FIG. 7 is a perspective view illustrating an example of a third lightfunction module shown in FIG. 2;

FIG. 8 is an exploded perspective view illustrating the third lightfunction module shown in FIG. 7;

FIG. 9 is a first perspective view illustrating the light distributionmodule shown in FIG. 7 in a detached state from a light source device;

FIG. 10 is a second perspective view illustrating the light distributionmodule shown in FIG. 7 in a detached state from a light source device;

FIG. 11 is a first exploded perspective view illustrating an example ofa light source module according to a first implementation of the presentdisclosure;

FIG. 12 is a second exploded perspective view illustrating an example ofa light source module according to a first implementation of the presentdisclosure;

FIG. 13 is a front view illustrating an example of a light emission bodyof the light source module according to the first implementation of thepresent disclosure;

FIG. 14 is a cross-sectional view taken along line Q-Q of FIG. 3;

FIG. 15 is a cross-sectional view taken along line R-R of FIG. 3;

FIG. 16 is a configuration diagram illustrating an example of an opticalsystem of the light source module according to the first implementationof the present disclosure;

FIG. 17 is a diagram illustrating an optical path of the optical systemshown in FIG. 16;

FIG. 18 is an exploded perspective view illustrating the lightdistribution module and the light source module shown in FIG. 9;

FIG. 19 is a cross-sectional view taken along line T-T of FIG. 7;

FIG. 20 is a cross-sectional view taken along line V-V of FIG. 7;

FIG. 21 is a configuration diagram of an optical system of the lightdistribution module and the light source module shown in FIG. 7;

FIG. 22 is a diagram illustrating an optical path of the optical systemshown in FIG. 21;

FIG. 23 is a perspective view illustrating an example of an arrangementof light function modules according to some implementations of thepresent disclosure;

FIG. 24 is a perspective view illustrating an example of an arrangementof light function modules according to some implementations of thepresent disclosure;

FIG. 25 is a perspective view illustrating an example of an arrangementof light function modules according to some implementations of thepresent disclosure;

FIG. 26 is a perspective view illustrating an example of an arrangementof light function modules according to some implementations of thepresent disclosure;

FIG. 27 is a perspective view illustrating an example of an arrangementof light function modules according to some implementations of thepresent disclosure;

FIG. 28 is a perspective view illustrating an example of a shieldretainer assembly according to some implementations of the presentdisclosure;

FIG. 29 is a perspective view illustrating another example of a shieldretainer assembly according to some implementations of the presentdisclosure;

FIG. 30 is an exploded perspective view illustrating an example of alight distribution module according to some implementations of thepresent disclosure; and

FIG. 31 is a cross-sectional view illustrating an example of a thirdlight distribution module according to some implementations of thepresent disclosure.

DETAILED DESCRIPTION

Various implementations of a light lamp for a vehicle are describedherein. In some implementations, the light lamp includes a plurality oflight function modules. Each light function module may includecomponents that are arranged to provide a more compact, efficient,and/or functional light lamp.

For example, in some implementations, the components of the light lampmay be arranged to provide a more compact light lamp for a vehicle,using a smaller number of components.

In some implementations, a light lamp for a vehicle may include a lightfunction module composed of a light source module, a light distributionmodule, and a dissipation module.

In some implementations, a number of components in a light source modulemay be reduced by using a common-type light source module and acommon-type dissipation module, which may be used by each modules of aplurality of light function modules.

In some implementations, a light distribution module coupled to thelight source module may be replaceable, thus providing a light functionmodule that is modular and able to be replaced as needed to performdifferent functions.

In accordance with an implementation of the present disclosure, a lightlamp for a vehicle may include a plurality of light function modules,wherein each of the plurality of light function modules comprises: alight source module having a light source and a light source lens whichis disposed in front of the light source and includes a reflection unitprovided on a part of a front surface of the light source lens; a lightdistribution module disposed in front of the light source module andconfigured to distribute light emitted by the light source lens; and adissipation module disposed behind the light source module andconfigured to dissipate heat generated by the light source.

FIG. 1 illustrates a perspective view of an example of a light lamp fora vehicle according to an implementation of the present disclosure; andFIG. 2 illustrates a perspective view of the interior of the light lampshown in FIG. 1.

Referring to FIG. 1, a light lamp 1 for a vehicle according to animplementation of the present disclosure may include at least one innerlens 2 or 3 and an outer lens disposed in front of the inner lens 2 or3.

For example, a plurality of inner lenses 2 and 3 may be provided insidethe light lamp 1. The plurality of inner lenses 2 and 3 may be disposedbehind the outer lens 4.

The outer lens 4 may be larger than the plurality of inner lenses 2 and3, and may be disposed in front of the plurality of inner lenses 2 and 3to protect the plurality of inner lenses 2 and 3.

The plurality of inner lenses 2 and 3 may be spaced apart from eachother behind the outer lens 4. The plurality of inner lens 2 and 3 maybe spaced apart from each other in a horizontal or vertical direction.

Referring to FIG. 2, the light lamp 1 may include at least one lightmodule 5 or 6. For example, a plurality of light modules 5 and 6 may beprovided inside the light lamp 1. The plurality of light modules 5 and 6may be spaced apart from each other.

The light lamp 1 may include at least one light function module. Forexample, the light lamp 1 may include a plurality of light functionmodules.

The plurality of light function modules may include a first lightfunction module 20 and a second light function module 30. The pluralityof light function modules may further include one or more third lightfunction modules 40, e.g., two third light function modules 40.

At least one of the first or second light function module 20 or 30 amongthe plurality of light function modules may have a function differentfrom that of the third light function module 40. The two light functionmodules 40 among the plurality of light function modules may have thesame function.

The light lamp 1 may include at least one high beam module, at least onebooster module, and at least one low beam module. For example, the firstlight function module 20, the second light function module 30, and thethird light function module 40 may provide a high beam module foremitting a high beam, a booster module for reinforcing light emitted bythe high beam module, and a low beam module for emitting a low beam.

The light lamp 1 may be configured such that the number of modules of aparticular type among the first light function modules 20, the secondlight function modules 30, and the third light function modules 40 maydiffer. For example, the light lamp 1 may include a single first lightfunction module 20, a single second light function module 30, and aplurality of third light function modules 40.

The light lamp 1 may include a first light module 5 which may beprovided by the first light function module 20 and the second lightfunction module 30 that are coupled to each other. In addition, thelight lamp 1 may include a second light module 6 which may be providedby the plurality of third light function modules 40 that are coupled toone another.

In this case, the first light module 5 may be spaced apart from thesecond light module 6.

For example, the first light function module 20 may be a high beammodule for emitting a high beam, the second light function module 30 maybe a booster beam module for emitting a booster beam, and each thirdlight function module 40 may be a low beam module. In addition, theplurality of third light function modules 40 may be spaced apart fromthe first light function module 20 and the second light function module30, and arranged in a vertical direction.

A third light function module 40 disposed higher than other third lightfunction module(s) 40 (“top third light function module”) may behorizontally spaced apart from the first light function module 20 and/orthe second light function module 30. For example, the top third lightfunction module may be horizontally spaced apart from the first lightfunction module 20 which may be disposed higher than the second lightfunction module 30.

In addition, a third light function module 40 positioned lower thanother third light function module(s) 40 (“bottom third light functionmodule”) may be horizontally spaced apart from the first light functionmodule 20 and/or the second light function module 30. For example, thebottom third light function module may be horizontally spaced apart fromthe second light function module 30 which may be disposed lower than thefirst light function module 20.

Referring back to FIG. 1, the lighting lamp for a vehicle may beconfigured with inner lenses 2 and 3. The number of inner lenses may beless than the number of modules of the plurality of light functionmodules.

The inner lenses 2 and 3 may be disposed in front of the plurality oflight function modules 20, 30, and 40. The inner lenses 2 and 3 may bedisposed to face light distribution modules including at least two lightfunction modules among the plurality of light function modules.

For example, one of the plurality of inner lenses 2 and 3 (e.g., innerlens 2) may be disposed in front of the first light function module 20and the second light function module 30, and a beam emitted by thesecond light function module 30 may pass through one of the plurality ofinner lenses 2 and 3 together with a beam emitted by the first lightfunction module 20.

In addition, the other one of the inner lenses 2 and 3 (e.g., inner lens3) may be disposed in front of the plurality of third light functionmodules 40, and respective beams emitted by the plurality of third lightfunction modules 40 may pass through the other inner lens 2 or 3simultaneously or at different times.

In the case where two inner lenses 2 and 3 are disposed behind the outerlens 4, a first inner lens and a second inner lens may be spaced apartfrom each other. In this case, the first inner lens may be disposed infront of the first light function module 20 and the second lightfunction module 30. In addition, the second inner lens may be disposedin front of the plurality of third light function modules 40.

FIG. 3 illustrates a perspective view of an example of first and secondlight function modules shown in FIG. 2; FIG. 4 illustrates an explodedperspective view of the first and second light function modules shown inFIG. 3; FIG. 5 illustrates a first perspective view of the lightdistribution module shown in FIG. 3 in a detached state from a lightsource module; and FIG. 6 illustrates a second perspective view of thelight distribution module shown in FIG. 3.

FIG. 7 illustrates a perspective view of an example of a third lightfunction module shown in FIG. 2; FIG. 8 illustrates an explodedperspective view of the third light function module shown in FIG. 7;FIG. 9 illustrates a first perspective view of the light distributionmodule shown in FIG. 7 in a detached state from a light source device;and FIG. 10 illustrates a second perspective view of the lightdistribution module shown in FIG. 7 in a detached state from a lightsource device.

Referring to FIG. 3, each of the plurality of light function modules(e.g., 20, 30, and 40) may include a light source module 200, a lightdistribution module, and a dissipation module 600.

The light source module 200 may be configured to emit light toward thelight distribution module.

The light distribution module may be disposed in front of the lightsource module 200, and distribute the light emitted by the light sourcemodule 200. The light distribution module may distribute light, which isincident from the light source module 200, in various ways to formvarious patterns. Different light distribution modules may bedistinguished by respective light distribution patterns. When coupled tothe light source module 200, the light distribution module may functionto provide a high beam or a low beam.

The light distribution module may include a projection lens, and a lightdistribution case having a projection lens accommodating space.

The projection lens may be mounted in the projection lens accommodatingspace. The projection lens may have a convex front surface.

The light distribution case may have a light emission opening formed atthe front thereof. At least a part of the front surface of theprojection lens may be exposed to an outside of the light distributioncase through the light emission opening.

The light distribution module may further include a projection lensretainer for fixing the projection lens onto the light distributioncase. The projection lens retainer may be coupled to a rear surface ofthe light distribution case.

The light distribution module may further include a diffuser disposedbehind the projection lens retainer. The diffuser may face a rearsurface of the projection lens.

The light distribution module may be coupled to at least one of thelight source module 200 and the dissipation module 600, or may form apart of light function modules, together with the light source module200 and the dissipation module 600.

A function of each of the plurality of light function modules 20, 30,and 40 may be determined based on a characteristic of the lightdistribution module disposed in front of the light source module 200.

For example, the lighting lamp for a vehicle may include three types ofthe light distribution module 300, 400, and 500. The lighting lamp for avehicle may include a first light distribution module 300, a secondlight distribution module 400, and a third light distribution module500. The first light distribution module 300, the second lightdistribution module 400, and the third light distribution module 500 maybe respectively coupled to the light source module 200.

The first light distribution module 300, the second light distributionmodule 400, and the third light distribution module 500 may havedifferent light distribution patterns.

Referring to FIGS. 3 through 6, the first light function module 20 mayinclude a first light distribution case 310 into which a firstprojection lens 302 is mounted. In addition, the second light functionmodule 30 may include a second light distribution case 410 into which asecond projection lens 402 is mounted.

The first projection lens 302 and the second projection lens 402 mayhave different curvatures, and the first light function module 20 andthe second light function module 30 may form different lightdistribution patterns. In some implementations, the light distributionarea of the first light function module 20 may be larger than that ofthe second light function module 30. In some implementations, the lightdistribution area of the second light function module 30 may overlap apart of the light distribution area of the first light function module20.

Referring to FIGS. 7 through 10, the third light function module 40 mayinclude a third light distribution case 510 into which a thirdprojection lens 502 is mounted. A shield may be embedded in the thirdlight function module 40, and a low beam may be formed according to acut-off line of an opening formed in the shield.

Depending on a desired function of a light function module, a lightdistribution module may be the first light distribution module 300 foremitting a high beam, the second light distribution module 400 foremitting a booster beam, or the third light distribution module 500 foremitting a low beam.

A common-type light source module 200 and a common-type dissipationmodule 600 may be used across light function modules having differentlight distribution modules. By using the common-type light source module200 and the common-type dissipation module 600, manufacturing cost ofthe light lamp for a vehicle may potentially be reduced.

The first light distribution module 300, the second light distributionmodule 400, and the third light distribution module 500 may be differentfrom each other. The first light distribution module 300, the secondlight distribution module 400, and the third light distribution module500 may be selectively used for each of the plurality of light functionmodules 20, 30, and 40.

For example, the first light distribution module 300 may be connected toat least one of the light source module 200 and the dissipation module600 to thereby function as the first light function module 20. Inaddition, the second light distribution module 400 may be connected toat least one of the light source module 200 and the dissipation module600 to thereby function as the second light function module 30. Inaddition, the third light distribution module 500 may be connected to atleast one of the light source module 200 and the dissipation module 600to thereby function as the third light function module 40.

Now turning to the coupling of the light distribution modules to thelight source module, each of the first light distribution module 300,the second light distribution module 400, and the third lightdistribution module 500 may be coupled to the light source module 200,for example in an identical manner and using identical couplingstructures.

Referring to FIGS. 5, 6, 9, and 10, a top-surface protrusion 211, abottom-surface protrusion 212, and a side-surface groove 213 may beformed in the light source module 200.

In addition, as illustrated in FIGS. 5 and 6, a top-surface groove 513,a bottom-surface groove 514, and a side-surface protrusion 515 may beformed in each of the first light distribution module 300 and the secondlight distribution module 400. As illustrated in FIGS. 9 and 10, atop-surface groove 513, a bottom-surface groove 514, and a side-surfaceprotrusion 515 may be formed in the third light distribution module 500.

Referring back to FIG. 5, the light source module 200 may include alight emission body 210 in which the top-surface protrusion 211, thebottom-surface protrusion 212, and the side-surface groove 213 areformed. A light emission head part 214 may be formed at the front of thelight emission body 210. The top-surface protrusion 211, thebottom-surface protrusion 212, and the side-surface groove 213 may beformed in the light emission head part 214.

The top-surface protrusion 211 may be formed in a top surface of thelight emission head part 214. A plurality of top-surface protrusions 211being spaced apart from each other may be provided.

The bottom-surface protrusion 212 may be formed in a bottom surface ofthe light emission head part 214. A plurality of bottom-surfaceprotrusions 212 being spaced apart from each other may be provided.

The side-surface groove 213 may be formed in a side surface of the lightemission head part 214. A plurality of side-surface grooves 213 spacedapart from each other may be provided.

Two top-surface protrusions 211 and two bottom-surface protrusions 212may be formed.

A distance D3 between the two top-surface protrusions 211 and a distanceD4 between the two bottom-surface protrusions 212 may be different fromeach other. Such configuration may help prevent the first lightdistribution module 300, the second light distribution module 400, andthe third light distribution module 500 from being incorrectlyassembled, e.g., assembled upside down.

The top-surface groove 513, the bottom-surface groove 514, and theside-surface protrusion 515 may be formed in the first lightdistribution case 310 of the first light distribution module 300, thesecond light distribution case 410 of the second light distributionmodule 400, and the third light distribution case 510 of the third lightdistribution module 500.

With reference to FIGS. 3 to 6, a structure coupling the first lightdistribution module 300 and the light source module 200 is hereinafterdescribed.

At least part of a light source module 200 included in the first lightfunction module 20 may be inserted into the first light distributionmodule 300. At least part of the light emission body 210 of the lightsource module 200 included in the first light function module 20 may beinserted into the rear of the first light distribution case 310.

A top-surface groove 513 may be formed in a top surface of the firstlight distribution case 310. A plurality of top-surface grooves 513 maybe formed in the top surface of the first light distribution case 310and spaced apart from each other. The top-surface protrusion 211 of thelight source module 200 included in the first light function module 20may be fitted into the top-surface groove 513 of the first lightdistribution case 310 thereby to be engaged therewith.

A bottom-surface groove 514 may be formed in a bottom surface of thefirst light distribution case 310. A plurality of bottom-surface grooves514 may be formed in the bottom surface of the first light distributioncase 310 and spaced apart from each other. The bottom-surface protrusion212 of the light source module 200 included in the first light functionmodule 20 may be fitted into the bottom-surface groove 514 of the firstlight distribution case 310 thereby to be engaged therewith.

A side-surface protrusion 515 may be formed in a side surface of thefirst light distribution case 310. A plurality of side-surfaceprotrusions 515 may be formed in side surfaces of the first lightdistribution case 310, and may be respectively formed in one sidesurface and the other side surface of the first light distribution case310 and thus spaced apart from each other. The side-surface protrusion515 may be fitted into the side-surface groove 213 of the light sourcemodule 200 included in the first light function module 20 thereby to beengaged therewith.

The first light distribution module 300 may be coupled to the lightsource module 200 included in the first light function module 20 througha fastening member which penetrates the side-surface protrusion 515 andthe side-surface groove 213.

In addition, with reference to FIGS. 3 to 6, a structure coupling thesecond light distribution module 400 and the light source module 200 ishereinafter described.

At least part of a light source module 200 included in the second lightfunction module 30 may be inserted into the second light distributionmodule 400. At least part of the light emission body 210 of the lightsource module 200 included in the second light function module 300 maybe inserted into the rear of the second light distribution case 410.

A top-surface groove 513 may be formed in a top surface of the secondlight distribution case 410. A plurality of top-surface groove 513 maybe formed in the top surface of the second light distribution case 410and spaced apart from each other. The top-surface protrusion 211 of thelight source module 200 included in the second light function module 30may be fitted into the top-surface groove 513 thereby to be engagedtherewith.

A bottom-surface groove 514 may be formed in a bottom surface of thesecond light distribution case 410. A plurality of bottom-surfacegrooves 514 may be formed in the bottom surface of the second lightdistribution case 410 and spaced apart from each other. Thebottom-surface protrusion 212 of the light source module 200 included inthe second light function module 30 may be fitted into thebottom-surface groove 514 thereby to be engaged therewith.

A side-surface protrusion 515 may be formed in a side surface of thesecond light distribution case 410. A plurality of side-surfaceprotrusions 515 may be formed in side surfaces of the second lightdistribution case 410, and may be respectively formed in one sidesurface and the other side surface of the second light distribution case410 and thus spaced apart from each other. The side-surface protrusion515 may be fitted into the side-surface groove 213 of the light sourcemodule 200 included in the second light function module 30 thereby to beengaged therewith.

The second light distribution module 400 may be coupled to the lightsource module 200 through a fastening member which penetrates theside-surface protrusion 515 and the side-surface groove 213.

With reference to FIGS. 7 to 10, a structure coupling the third lightdistribution module 500 and the light source module 200 is hereinafterdescribed.

At least part of a light source module 200 included in the third lightfunction module 40 may be inserted into the third light distributionmodule 500. At least part of the light emission body 210 of the lightsource module 200 included in the third light function module 40 may beinserted into the rear of the third light distribution case 510.

A top-surface groove 513 may be formed in a top surface of the thirdlight distribution case 510. A plurality of top-surface grooves 513 maybe formed in the top surface of the third light distribution case 510and spaced apart from each other. The top-surface protrusion 211 of thelight source module 200 included in the third light function module 40may be fitted into the top-surface groove 513 thereby to be engagedtherewith.

A bottom-surface groove 514 may be formed in a bottom surface of thethird light distribution case 510. A plurality of bottom-surface grooves514 may be formed in the bottom surface of the third light distributioncase 510 and spaced apart from each other. The bottom-surface protrusion212 of the light source module 200 included in the third light functionmodule 40 may be fitted into the bottom-surface groove 514 thereby to beengaged therewith.

A side-surface protrusion 515 may be formed in a side surface of thethird light distribution case 510. A plurality of side-surfaceprotrusions 515 may be formed in side surfaces of the third lightdistribution case 510, and may be respectively formed in one sidesurface and the other side surface of the third light distribution case410 and thus spaced apart from each other. The side-surface protrusion515 may be fitted into the side-surface groove 213 of the light sourcemodule 200 included in the third light function module 40 thereby to beengaged therewith.

The third light distribution module 500 may be coupled to the lightsource module 200 through a fastening member which penetrates theside-surface protrusion 515 and the side-surface groove 213.

In some implementations, the dissipation module 600 may be connected tothe light source module 200 to dissipate heat of the light source module200. The dissipation module 600 may be disposed at the rear of the lightsource module 200 so as to dissipate heat generated by a light source230 of the light source module 200. The light source 230 will bedescribed later.

FIG. 11 illustrates a first exploded perspective view of an example of alight source module according to a first implementation of the presentdisclosure; FIG. 12 illustrates a second exploded perspective view of anexample of a light source module according to a first implementation ofthe present disclosure; FIG. 13 illustrates a front view of an exampleof a light emission body of the light source module according to thefirst implementation of the present disclosure; FIG. 14 illustrates across-sectional view taken along line Q-Q of FIG. 3; and FIG. 15illustrates a cross-sectional view taken along line R-R of FIG. 3.

FIG. 16 illustrates a configuration diagram of an example of an opticalsystem of the light source module according to the first implementationof the present disclosure; and FIG. 17 illustrates an optical path ofthe optical system shown in FIG. 16;

A first light function module 20 out of a plurality of light functionmodules may include a first light distribution module 300, a lightsource module 200, and a dissipation module 600.

In addition, a second light function module 20 out of the plurality oflight function modules may include a second light distribution module400, a light source module 200, and a dissipation module 600.

A common-type light source module 200 may be used, regardless ofrespective type of each of the plurality of light function modules, andthe light source module 200 will be hereinafter described.

Referring to FIGS. 11 through 16, the light source module 200 mayinclude: a light source 230; a light source lens 250; a light emissionbody 210 accommodating the light source 230 and the light source lens250; a light emission cover 220 covering the light emission body 210;and a phosphor assembly 240 connected to the light emission body 210. Inaddition, the light source module 200 may include a reflection unit 251which reflects light, passing through the light source lens 250, towardthe light source lens 250. The reflection unit 251 may be provided toreflect incident light toward a phosphor 241 of the phosphor assembly240. The reflection unit 251 may be disposed at the front of the lightsource lens 250. The reflection unit 251 may be integrated with thelight source lens 250 or spaced apart from the light source lens 250.

The light source 230 may be configured to receive electrical energy andconvert the electrical energy into optical energy, and may be alight-emitting source, such as an ultra high voltage (UHV) mercury lamp,a light-emitting diode (LED), or a laser diode.

It is preferable that the light source 230 is highly collimated, havehigh efficiency, and enables long-distance illumination. For example,such a light source may be provided using a laser diode. In addition, alaser diode that emits in the blue region of the visible spectrum withhigh efficiency is preferred.

The light source 230 may emit light toward the reflection unit 251. Thelight source 230 may emit light toward the light source lens 250, andthe light emitted toward the light source lens 250 may pass through thelight source lens 250 and then be incident on the reflection unit 251.The light source 230 may emit light toward the rear surface of the lightsource lens 250, and the light incident on the rear surface of the lightsource lens 250 from the light source 230 may pass through the lightsource lens 250 and then be incident on the rear surface of thereflection unit 251.

The light source 230 may be coupled to the dissipation module 600configured to dissipate heat generated by the light source 230.

Between the light source 230 and the light source lens 250, there may bea light reducer which reduces the size (e.g., beam width, beam diameter)of light emitted by the light source 230 and then outputs the lighttoward the reflection unit 251. The light emitted by the light source230 may pass through the light reducer and then be output toward thereflection unit 251.

The light reducer may include a plurality of reducer lenses. Theplurality of reducer lenses may include a first reducer lens 260 and asecond reducer lens 270.

The light source lens 250 may be disposed before the light source 230.The reflection unit 251 may be provided on a part of the front surfaceof the light source lens 250.

The light emission cover 220 may cover the light emission body 210. Thelight emission body 210 may be configured to accommodate the lightsource 230, the light source lens 250, the first reducer lens 260, andthe second reducer lens 270.

The light emission body 210 and the light emission cover 220 may form alight source accommodating space in which the light source 230 isaccommodated. The light source 230 may be inserted into the light sourceaccommodating space and be accommodated therein.

The light emission body 210 and the light emission cover 220 may form alight source lens accommodating space in which the light source lens 250is accommodated. The light source lens 250 may be inserted into thelight source lens accommodating space and be accommodated therein.

The light emission body 210 and the light emission cover 220 may form afirst reducer lens accommodating space in which the first reducer lens260 is accommodated. The first reducer lens 260 may be inserted into thefirst reducer lens accommodating space and be accommodated therein.

The light emission body 210 and the light emission cover 220 may form asecond reducer lens accommodating space in which the second reducer lens270 is accommodated. The second reducer lens 270 may be inserted intothe second reducer lens accommodating space and be accommodated therein.

The light emission body 210 may include: a light emission head part 214in which the light source lens 250 is mounted; and a light emission tailpart 215 connected to the rear of the light emission head part 214. Alight entrance hole 214 a and a phosphor assembly coupling hole 241 bmay be formed at the rear of the light emission head part 214.

The phosphor assembly 240 may be coupled to the rear of the lightemission head part 214 and may cover the phosphor assembly coupling hole214 b.

The light emission cover 220 may be coupled to the light emission body210 so as to cover the light emission tail part 215.

In the case where a light source lens insertion hole 214 c is formed atthe front of the light emission head part 214 and the light source lens250 is mounted in the light source lens insertion hole 214 c, the frontsurface of the light source lens 250 may be exposed to an outside of thelight emission head part 214 through the light source lens insertionhole.

The light emission head part 214 may include a light source lensstopping protrusion 214 d formed along an inner circumferential surfaceof the light source lens insertion hole 214 c. In addition, the rearsurface of the light source lens 250 may come into contact with thelight source lens stopping protrusion 214 d.

The light source module 200 may be coupled to the front surface of thelight emission head part 214. The light source module 200 may furtherinclude a light source lens retainer 280 for fixing the light sourcelens 250 to the light emission head part 214. The light source lensretainer 280 may be coupled to the light emission head part 214 througha fastening member.

The light source lens retainer 280 coupled to the light emission headpart 214 may be disposed to contact the front surface of the lightsource lens 250. The light source lens retainer 280 may press the frontsurface of the light source lens 250.

The light source lens 250 may be disposed between the light source lensstopping protrusion 214 d and the light source lens retainer 280. Beingdisposed between the light source lens stopping protrusion 214 d and thelight source lens retainer 280, the light source lens 250 may be fixedor constrained in a longitudinal direction of the light emission body210.

The light source lens retainer 280 may include a light blocking section281 which faces at least part of the front surface of the light sourcelens 250.

In the case where the reflection unit 251 is provided on the frontsurface of the light source lens 250, the light blocking section 281 maybe disposed to face the reflection unit 251. Light emitted by the lightsource 230 may be reflected by the reflection unit 251. However, lightscattered or diffusely-reflected by the reflection unit 251 may not beincident on the phosphor 241 but may be emitted toward the front of thelight source lens 250. In this case, the light blocking section 281 ofthe light source lens retainer 280 may block the light reflected by thereflection unit 251, but not the light reflected by the phosphor 241.For example, the light blocking section 281 may block light which isemitted toward the front of the light source lens 250 without passingthrough the phosphor 241.

The light source lens 250 may be larger than the phosphor 241 and thereflection unit 251. In addition, the light source lens 250 may bedisposed in front of the phosphor 241 to protect both the phosphor 241and the reflection unit 251.

The light source lens 250 may have a circular or polygonal shape. Thelight source lens 250 may include a front surface, a rear surface, and acircumferential surface.

The front surface of the light source lens 250 may be a curved surfacethat is convex toward the front of the light source lens 250. The rearsurface of the light source lens 250 may be a flat surface or a curvedsurface that is concave toward the front of the light source lens 250.

The light source lens 250 may have an optical axis X. The optical axis Xof the light source lens 250 may be a rotation symmetry axis or acentral axis of the light source lens 250 and may refer to a straightline passing through the center of the front surface of the light sourcelens 250 and the center of the rear surface of the light source lens250. The light source lens 250 may be a condenser lens having a convexfront surface, and the front surface of the light source lens 250 may besymmetric with respect to the optical axis X.

The phosphor 241 may be disposed behind the light source lens 250 and isconfigured convert a wavelength of light reflected by the reflectionunit 251 and reflect the wavelength-converted light toward the lightsource lens 250. For example, the phosphor 241 may be a reflectivephosphor.

Heat may be generated during the wavelength conversion process.Accordingly, the phosphor 241 is preferably spaced apart from the lightsource lens 250. For example, the phosphor 241 may be disposed behindthe light source lens 250 and spaced apart from the light source lens250. More specifically, the phosphor 241 may be disposed to face therear surface of the light source lens 250 and may reflect light towardthe rear surface of the light source lens 250.

In some implementations, the phosphor 241 may be disposed on the opticalaxis X of the light source lens 250 and spaced apart from the rearsurface of the light source lens 250. The front surface of the phosphor241 may be in parallel to the rear surface of the light source lens 250.

Alternatively, the phosphor 241 may be disposed off of the optical axisX of the light source lens 250. However, in this case, the resultingefficiency may be lower because a region of the light source lens 250through which the light reflected by the phosphor 241 passes is smallerthan the case where the phosphor 241 is disposed on the optical axis Xof the light source lens 250. Accordingly, the phosphor 241 ispreferably disposed on the optical axis X of the light source lens 250.

Now turning to the reflective phosphor, the phosphor 241 may include awavelength conversion layer disposed to face the rear surface of thelight source lens 250, and a phosphor reflection unit disposed at therear of the wavelength conversion layer.

The wavelength conversion layer may be a wavelength conversion film andmay include an opto-ceramic. The wavelength conversion layer may bedisposed in front of the reflection unit and convert a wavelength oflight reflected by the reflection unit. The wavelength conversion layermay be a wavelength conversion film that converts incident light of theblue wavelength band (“blue light”) into light of the yellow wavelengthband (“yellow light”). The wavelength conversion layer may include ayellow opto-ceramic.

The phosphor reflection unit may include a plate and a reflectivecoating layer coated on an outer surface of the plate. For example, theplate may be made of metal. The phosphor reflection unit may support thewavelength conversion layer, and light passing through the wavelengthconversion layer may be reflected by the phosphor reflection unit towardthe rear surface of the light source lens 250.

When blue light is reflected by the phosphor reflection unit toward thephosphor 241, a part of the blue light is reflected by the surface ofthe wavelength conversion layer. The remaining part of the blue lightthen enters the wavelength conversion layer, excites the wavelengthconversion layer, and is converted into yellow light. The convertedyellow light may be reflected by the phosphor reflection unit toward thefront of the wavelength conversion layer.

The mixture of the blue light reflected from the surface of thewavelength conversion layer and the yellow light emitted toward thefront of the wavelength conversion layer produce white light that isemitted toward the front of the phosphor 241. The white light may passthrough the light source lens 250 and then be output toward the front ofthe light source lens 250.

Unlike a laser beam travelling in a straight line, the white lightemitted toward the front of the phosphor assembly 240 may be scatteredin various directions (e.g., radially, diffusely). The light source lens250 disposed in front of the phosphor assembly 240 may concentrate thescattered white light.

However, while light is scattered in the wavelength conversion layer ofthe phosphor 241, yellow light (or wavelength-converted light) may bescattered more widely than blue light (or non-wavelength convertedlight).

Due to such differences in scattering areas, there may be a region wherethe blue light is not mixed with the yellow light. As a result, forexample, a yellow ring may be generated around the white light by theyellow light that has not been mixed with the blue light.

The yellow ring may deteriorate color purity of light emitted toward thefront of the light source module 200.

The light source module 200 may be disposed in front of the light sourcelens retainer 280 and may further include a diffuser 290 which faces thefront surface of the light source lens 250. By appropriately scatteringthe light emitted by the light source lens 250, the diffuser 290 maymitigate the generation of the yellow ring.

A front-to-rear width of the lighting lamp for a vehicle may depend on adistance L between the phosphor 241 and the light source lens 250, andit is preferable that the phosphor 241 is disposed close to the lightsource lens 250 while mitigating potential thermal damage to the lightsource lens 250.

The phosphor assembly 240 may include a phosphor 241, a bracket 242, anda dissipation member 243. Light emitted by the light source 230 may bereflected by the reflection unit 251 and then be incident on thephosphor 241. In such cases, light may be concentrated on the phosphor241, thereby generating heat. Accordingly, a structure that enablesdissipating the heat generated in the phosphor 241 may be necessary. Thedissipation member 243 may help dissipate the heat generated by thephosphor 241. For example, the phosphor 241 may be accommodated in thedissipation member 243. As another example, the phosphor 241 may bedisposed to contact the dissipation member 243.

The dissipation member 243 may include a contact plate which comes intocontact with the phosphor 241, and a dissipation fin which protrudesfrom the contact plate. The contact plate may be attached to the rearsurface of the phosphor 241.

The bracket 242 may be connected to the dissipation member 243. Thebracket 242 may be connected to the light emission body 210. The bracket242 may connect the phosphor 241 and the dissipation member 243 to thelight emission body 210.

The bracket 242 may be fixed to the rear surface of the light emissionhead part 214, and the phosphor 241 may be disposed to face the rearsurface of light source lens 250. In addition, the phosphor 241 may be areflective phosphor configured to convert a wavelength of lightreflected by the reflection unit 251 and reflect thewavelength-converted light toward the light source lens 250. Thephosphor 241 may be disposed on the optical axis of the light sourcelens 250.

In another example, the phosphor assembly 240 may include: a phosphor241 which converts a wavelength of incident light and reflects thewavelength-converted light; and a dissipation member 243 which comes incontact with the rear surface of the phosphor 241. The dissipationmember 243 may be coupled directly to a light emission body 210. In thiscase, the dissipation member 243 may act as a bracket 242. The lightemission body 210 includes: a light emission head part 214 in which thelight source lens 250 is mounted; and a light emission tail part 215which is connected to the rear of the light emission head part 214. Alight entrance hole 214 a and a phosphor assembly coupling hole 214 bare formed at the rear of the light emission head part 214. Thedissipation member 243 may include: a dissipation body; and a phosphorholder which is connected to the dissipation body and comes into contactwith the phosphor 241. The phosphor holder may be inserted into thephosphor assembly coupling hole 214 b, the dissipation body may beconnected to the rear surface of the light emission head part 214, andthe phosphor 241 may be disposed in the phosphor holder to face the rearsurface of the light source lens 250.

The position of the reflection unit 251 may depend on the position ofthe phosphor 241. For example, in the case where the phosphor 241 isdisposed behind the light source lens 250, the reflection unit 251 maybe spaced apart from the light source lens 250 and behind the lightsource lens 250; may be provided on the rear surface of the light sourcelens 250; may be provided on the front surface of the light source lens250; or may be spaced apart from the light source lens 250 and disposedin front of the light source lens 250.

In case where the reflection unit 251 is spaced apart from the lightsource lens 250 and disposed behind the light source lens 250, thereflection unit 251 may reflect light emitted by the light source 230,toward a space between the phosphor 241 and the light source lens 250.

In case where the reflection unit 251 is provided on the rear surface ofthe light source lens 250 and integrated with the light source lens 250,the reflection unit 251 may reflect light emitted by the light source230, toward a space between the phosphor 241 and the light source lens250.

In case where the reflection unit 251 is provided on the front surfaceof the light source lens 250 and integrated with the light source lens250, the reflection unit 251 may reflect light, emitted by the lightsource 230 and passing through the light source lens 250, toward thelight source lens 250 so that the reflected light is reflected againtoward the phosphor 241.

In case where the reflection unit 251 is spaced apart from the lightsource lens 250 and disposed in front of the light source lens 250, thereflection unit 251 may reflect light emitted by the light source 230and passing through the light source lens 250, toward the light sourcelens 250 so that the reflected light is reflected again toward thephosphor 241.

In the case the reflection unit 251 is disposed in front of or behindthe light source lens 250 to be spaced apart from the light source lens250, an increased number of components of the lighting lamp for avehicle may be required and the size of the lighting lamp may increasedue to a distance between the light source lens 250 and the reflectionunit 251.

Accordingly, the reflection unit 251 is preferably integrated with therear surface or the front surface of the light source lens 250 to makethe lighting lamp compact with a reduced number of components.

In the case where the reflection unit 251 is provided on the entire rearsurface or the entire front surface of the light source lens 250, thereflection unit 251 may reflect light, reflected by the phosphor 241 ina backward direction, so that the light reflected by the phosphor 241cannot be output through the front surface of the light source lens 250.

Accordingly, the reflection unit 251 is preferably provided on a part ofthe rear surface of the light source lens 250 or a part of the frontsurface of the light source lens 250. Additionally, the reflection unit251 is preferably large enough for the light source lens 250 to secure asufficient light emission region. Furthermore, the reflection unit 251is disposed off of the optical axis X of the light source lens 250. Inaddition, the reflection unit 251 is preferably disposed between theoptical axis X and the circumferential surface of the light source lens250.

The reflection unit 251 may be provided on a part of the rear surface ofthe light source lens 250 or a part of the front surface of the lightsource lens 250. The reflection unit 251 may be configured to reflectlight, emitted by the light source 230, toward the phosphor 241.

The reflection unit 251 may reflect the incident light toward the rearside of the light source lens 250.

The position of the reflection unit 251 is preferably determined byconsidering a distance between the phosphor 241 and the light sourcelens 250. For example, since the phosphor 241 is preferably disposedclose to the rear surface of the light source lens 250, the reflectionunit 251 is preferably provided on the front surface of the light sourcelens 250.

In such a configuration, the reflection unit 251 may be provided on apart of the front surface of the light source lens 250, and lightemitted by the light source 230 or a reducer may pass through the lightsource lens 250 and then be incident on the reflection unit 251. Inaddition, the light reflected by the reflection unit 251 may passthrough the light source lens 250 and then be incident on the phosphor241. Light whose wavelength is converted by the phosphor 241 may passthrough the light source lens 250 and then be emitted forward.

In such a configuration, the light source lens 250 may be a 3-path lensthrough which light passes three times, and the lighting lamp for avehicle may be made compact due to the 3-path lens.

In cases where the reflection unit 251 is formed on a part of a convexfront surface of the light source lens 250, the reflection unit may beformed to have an arc-shaped cross section that correspond to the convexfront surface. Additionally, when viewed from a front viewpoint of thelight source lens 250, the reflection unit 251 may have a circular orpolygonal shape.

The reflection unit 251 may be a concave mirror 571 formed in the frontsurface of the light source lens 250. The reflection unit 251 may have aconvex front surface and a concave rear surface.

The front surface of the reflection unit 251 may face a lightdistribution module 300, which will be described later, and may bedisposed between the light source lens 250 and the light distributionmodule 300 thereby to be protected by them.

In some implementations, the reflection unit 251 may be a reflectivecoating layer coated on the front surface of the light source lens 250while avoiding a region around the optical axis X of the light sourcelens 250. In some implementations, the reflection unit 251 may be acoating layer provided on a part of the front surface of the lightsource lens 250. For example, the reflection unit 251 may be a coatinglayer provided on a part of the front surface of the light source lens250, while avoiding a region around the optical axis X of the lightsource lens 250. In some implementations, the reflection unit 251 may bea reflection sheet attached to the front surface of the light sourcelens 250, while avoiding a region around the optical axis X of the lightsource lens 250.

The light source lens 250 may have a convex front surface, and thereflection unit 251 may be formed to have an arc-shaped cross-section.

Alternatively, the reflection unit 251 may be a concave mirror formed inthe front surface of the light source lens 250.

The light emission body 210 may include: a light emission head part 214in which the light source lens 250 is mounted; and a light emission tailpart 215 which is connected toward the rear of the light emission headpart 214. A flange section 215 a may be formed at the rear of the lightemission tail part 215.

The light emission cover 220 may be disposed between the flange section215 a and the light emission head part 214 and may cover a portion(e.g., a lower portion) of the light emission body 210.

The light source module 200 may include a light reducer that reduces awidth of light emitted by the light source 230. The light reducer may bedisposed between the light source lens 250 and the light source 230. Forexample, the light reducer may be disposed between the rear surface ofthe light source lens 250 and the front surface of the light source 230and spaced apart from the light source lens 250 and the light source230, respectively.

The light reducer may be disposed between the light emission body 210and the light emission cover 220. In addition, a plurality of lightreducers may be provided.

The light reducer may be spaced apart from the optical axis X of thelight source lens 250. For example, a part of the light reducer may fallon the optical axis X of the light source lens 250, but an optical axisP of the light reducer may be spaced apart from the light source lens250.

The light reducer may be disposed behind the light source lens 250 andoutput light in a direction parallel to the optical axis X of the lightsource lens 250. To this end, the optical axis P of the light reducermay be in parallel to the optical axis X of the light source lens 250.

In some implementations, the light reducer may include: a first reducerlens 260; and a second reducer lens 270 which is spaced apart from thefirst reducer lens 260 and configured to reduce a width of light that istransmitted by the first reducer lens 260. While a reduction in width oflight is described here, in general, a diameter or size of light may bereduced by the light reducer.

The first reducer lens 260 may be disposed between the light emissionbody 210 and the light emission cover 220. Alternatively, the firstreducer lens 260 may be disposed between the light source 230 and thelight source lens 250 in a light emission direction.

The second reducer lens 270 may be disposed between the light emissionbody 210 and the light emission cover 220. Alternatively, the secondreducer lens 270 may be disposed between the first reducer lens 260 andthe light source lens 250 in a light emission direction.

The first reducer lens 260 has a light entrance surface and a light exitsurface, and the second reducer lens 270 has a light entrance surfaceand a light exit surface.

The light exit surface of the first reducer lens 260 and the lightentrance surface of the second reducer lens 270 may be spaced apart fromeach other. The light exit surface of the first reducer lens 260 and thelight entrance surface of the second reducer lens 270 may be spacedapart from each other in a direction parallel to the optical axis X ofthe light source lens 250. The separation between the first reducer lens260 and the second reducer lens 270 may be an air gap.

An optical axis of the first reducer lens 260 and an optical axis of thelight source lens 250 may be spaced apart from each other. In addition,an optical axis of the second reducer lens 270 and an optical axis ofthe light source lens 250 may be spaced apart from each other.

In addition, an optical axis of the first reducer lens 260 and anoptical axis of the second reducer lens 270 may coincide with eachother.

The first reducer lens 260 and the second reducer lens 270 may be spacedapart from each other in a front-to-rear direction. The light exitsurface of the first reducer lens 260 and the light entrance surface ofthe second reducer lens 270 may be spaced apart from each other in thefront-to-rear direction.

The first reducer lens 260 may be disposed between the light source 230and the second reducer lens 270, and the second reducer lens 270 may bedisposed between the first reducer lens 260 and the light source lens250.

The light entrance surface of the first reducer lens 260 may face thelight source 230.

The optical axis P of the first reducer lens 260 may coincide with theoptical axis of the second reducer lens 270.

The light exit surface of the second reducer lens 270 may face the rearsurface of the first light source lens 250. The light exit surface ofthe second reducer lens 270 preferably does not face the dissipationmember 243 or the phosphor 241.

Each of the first reducer lens 260 and the second reducer lens 270 mayhave a convex light entrance surface. Each of the first reducer lens 260and the second reducer lens 270 may have a concave light exit surfacethrough which light is output.

The rear surface of the first reducer lens 260 may be a light entrancesurface that is a curved surface concave toward the rear of the firstreducer lens 260. Light incident from the light source 230 may berefracted by the convex light entrance surface such that the lightpassing through the first reducer lens 260 is progressively reduced inwidth or diameter.

The front surface of the first reducer lens 260 may be a light exitsurface that is a curved surface concave toward the rear of the firstreducer lens 260. The light exit surface may be concave over its entiresurface, or concave over a central region of the light exit surface.

A part of the light exit surface of the first reducer lens 260 may facethe light entrance surface of the second reducer lens 270.

The rear surface of the second reducer lens 270 may be a light entrancesurface that is a curved surface convex toward the rear of the secondreducer lens 270. Light output by the first reducer lens 260 and passedthrough the air between the first reducer lens 260 and the secondreducer lens 270 may be refracted by the convex light entrance surfaceof the second reducer lens 270, and light passing through the secondreducer lens 270 may be progressively reduced in width or diameter.

The front surface of the second reducer lens 270 may be a light exitsurface that is a curved surface concave toward the rear of the secondreducer lens 270. The light exit surface may be concave over its entiresurface, or concave over a central region of the light exit surface.

The first reducer lens 260 may have a convex light entrance surface, andthe second reducer lens 270 may have a concave light exit surface.

The entire light exit surface of the second reducer lens 270 may facethe rear surface of the light source lens 250.

A diameter D2 of the second reducer lens 270 may be smaller than adiameter D1 of the first reducer lens 260. A thickness T2 of the secondreducer lens 270 may be thinner than a thickness T1 of the first reducerlens 260.

Since light is primarily reduced by the first reducer lens 260, thesecond reducer lens 270 may be formed smaller than the first reducerlens 260 for the purpose of a more efficient use of an interior space ofthe light lamp.

The light entrance surface of the first reducer lens 260 and the lightentrance surface of the second reducer lens 270 may have the samecurvature or different curvature.

A degree of reduction in width of light passing through the firstreducer lens 260 may primarily depend on curvature of the light entrancesurface of the first reducer lens 260. For example, by increasing thecurvature of the light entrance surface of the first reducer lens 260,the width or diameter of light passing through the first reducer lens260 may be further.

Accordingly, by increasing the curvature of the light entrance surfaceof the light reducer lens 260, the size of each of the second reducerlens 270, the reflection unit 251, and the light source lens 250 may bereduced.

Light whose width is primarily reduced by the first reducer lens 260 maybe incident on the light entrance surface of the second reducer lens270. Accordingly, the light entrance surface of the second reducer lens270 is preferably formed not to excessively reduce the width or thediameter of the light.

For example, in the case where the light entrance surface of the firstreducer lens 260 and the light entrance surface of the second reducerlens 270 have different respective curvatures, the curvature of thelight entrance surface of the first reducer lens 260 is preferablygreater than the curvature of the light entrance surface of the secondreducer lens 270.

The light exit surface of the first reducer lens 260 and the light exitsurface of the second reducer lens 270 may have the same curvature ordifferent curvature.

A width of light output by the first reducer lens 260 may be changedaccording to the curvature of the light exit surface of the firstreducer lens 260.

The light exit surface of the first reducer lens 260 may have acurvature where light passing through the light exit surface is outputin a direction parallel to the optical axis of the first reducer lens260. In addition, the light exit surface of the first reducer lens 260may have a curvature configured such that a width of light passingthrough the light exit surface of the first reducer lens 260 isprogressively reduced between the light exit surface of the firstreducer lens 260 and the light entrance surface of the second reducerlens.

A width of light incident on the reflection unit 251 may vary dependingon a curvature of the light exit surface of the second reducer lens 270.The light exit surface of the second reducer lens 270 is preferablyshaped to allow light passing through the light exit surface of thesecond reducer lens 270 to be incident on the reflection unit 251 in adirection parallel to the optical axis of the optical axis of the secondreducer lens 270.

In the case where the light exit surface of the first reducer lens 260and the light exit surface of the second reducer lens 270 have differentrespective curvatures, the curvature of the light exit surface of thesecond reducer 270 is preferably greater than the curvature of the lightexit surface of the first reducer lens 260.

The light emission body 210 may be disposed to contact thecircumferential surface of the first reducer lens 260. Similarly, thelight emission cover 220 may be disposed to contact the circumferentialsurface of the first reducer lens 260.

Referring to FIG. 14, the light emission body 210 may further include afirst reducer stopping protrusion 215 d and a first reducer fixingprotrusion 215 e. The first reducer lens 260 may be disposed between thefirst reducer stopping protrusion 215 d and the first reducer fixingprotrusion 215 e.

The first reducer stopping protrusion 215 d, for example, may bedisposed in front of the first reducer lens 260. As another example, thefirst reducer stopping protrusion 215 d may be disposed to contact thefront surface of the first reducer lens 260.

The first reducer fixing protrusion 215 e, for example, may be disposedbehind the first reducer lens 260. As another example, the first reducerfixing protrusion 215 e may be disposed to contact the rear surface ofthe first reducer lens 260.

The light emission cover 220 may further include a first reducerstopping protrusion 221 and a first reducer fixing protrusion 222, andthe first reducer lens 260 may be disposed between the first reducerstopping protrusion 221 and the first reducer fixing protrusion 222.

The first reducer stopping protrusion 221, for example, may be disposedin front of the first reducer lens 260. As another example, the firstreducer stopping protrusion 221 may be disposed to contact the frontsurface of the first reducer lens 260.

The first reducer fixing protrusion 222, for example, may be disposedbehind the first reducer lens 260. As another example, the first reducerfixing protrusion 222 may be disposed to contact the rear surface of thefirst reducer lens 260.

Each of the first reducer stopping protrusions 215 d and 221 may beformed on the light emission body 210 and the light emission cover 220,respectively. A first reducer stopping protrusion 215 d of the lightemission body 210 and a first reducer stopping protrusion 221 of thelight emission cover 220 may be disposed to be connected to each otheras to form a single stopping protrusion when the light emission body 210and the light emission cover 220 are coupled to each other.

The first reducer stopping protrusion 215 d and the first reducer fixingprotrusion 215 e formed in the light emission body 210 may fix orconstrain the first reducer lens 260 in a longitudinal direction of thelight emission body 210.

The first reducer stopping protrusion 221 and the first reducer fixingprotrusion 222 formed in the light emission cover 220 may fix orconstrain the first reducer lens 260 in a longitudinal direction of thelight emission cover 220.

Each of the first reducer fixing protrusions 215 e and 222 may be formedin the light emission body 210 and the light emission cover 220,respectively. A first reducer fixing protrusion 215 e of the lightemission body 210 and a first reducer fixing protrusion 222 of the lightemission cover 220 may be disposed to be connected to each other as toform a single protrusion when the light emission body 210 and the lightemission cover 220 are coupled to each other.

The light emission body 210 may be disposed to contact thecircumferential surface of the second reducer lens 270. Similarly, thelight emission cover 220 may be disposed to contact the circumferentialsurface of the second reducer lens 270.

The light emission body 210 may further include a second reducerstopping protrusion 215 f and a second reducer fixing protrusion 215 g.The second reducer lens 270 may be disposed between the second reducerstopping protrusion 215 f and the second reducer fixing protrusion 215g.

The second reducer stopping protrusion 215 f, for example, may bedisposed in front of the second reducer lens 270. As another example,the second reducer stopping protrusion 215 f may be disposed to contactthe front surface of the second reducer lens 270.

The second reducer fixing protrusion 215 g, for example may be disposedbehind the second reducer lens 270. As another example, the secondreducer fixing protrusion 215 g may be disposed to contact the rearsurface of the second reducer lens 270.

The light emission cover 220 may further include a second reducerstopping protrusion 223 and a second reducer fixing protrusion 224, andthe second reducer lens 270 may be disposed between the second reducerstopping protrusion 223 and the second reducer fixing protrusion 224.

The second reducer stopping protrusion 223 may be disposed, for example,in front of the second reducer lens 270. As another example, the secondreducer stopping protrusion 223 may be disposed to contact the frontsurface of the second reducer lens 270.

The second reducer fixing protrusion 224 may be disposed, for example,behind the second reducer lens 270. As another example, the secondreducer fixing protrusion 224 may be disposed to contact the rearsurface of the second reducer lens 270.

Each of the second reducer stopping protrusion 215 f and 223 may beformed in the light emission body 210 and the light emission cover 220,respectively. A second reducer stopping protrusion 215 f of the lightemission body 210 and a second reducer stopping protrusion 223 of thelight emission cover 220 may be disposed to be connected to each otheras to form a single protrusion when the light emission body 210 and thelight emission cover 220 are coupled to each other.

The second reducer stopping protrusion 215 f and the second reducerfixing protrusion 215 g formed in the light emission body 210 may fix orconstrain the second reducer lens 270 in a longitudinal direction of thelight emission body 210.

The second reducer stopping protrusion 223 and the second reducer fixingprotrusion 224 formed in the light emission cover 220 may fix orconstrain the second reducer lens 270 in a longitudinal direction of thelight emission cover 220.

Each of the second reducer fixing protrusion 215 g and 224 may be formedin the light emission body 210 and the light emission cover 220,respectively. A second reducer fixing protrusion 215 g of the lightemission body 210 and a second reducer fixing protrusion 224 of thelight emission cover 220 may be disposed to be connected to each otheras to form a single protrusion when the light emission body 210 and thelight emission cover 220 are coupled to each other.

Light emitted by the light source 230 may pass through the first reducerlens 260 and the second reducer lens 270. Light emitted by the secondreducer lens 270 may pass through the light entrance hole 214 a and thenbe incident on the light source lens 250.

The light entrance hole 214 a may be formed, for example, in the lightemission body 210. In another example, the light entrance hole 214 a maybe formed in the light emission cover 220. In yet another example, thelight entrance hole 214 a may be formed between the light emission body210 and the light emission cover 220.

The front surface of the second reducer lens 270 may be disposed to facethe rear surface of the light source lens 250 through the light entrancehole 214 a.

The light emission tail part 215 may include a light source insertionhole 215 b which is formed through the flange section 215 a, and thelight source 230 may be inserted into the light source insertion hole215 b. In some implementations, the light source insertion hole 215 bpenetrates the flange section 215 a. The light source 230 may bedisposed between the light emission body 210 and the light emissioncover 220.

The light source 230 may include a light emitter 231 and a base portion232, and the light emission tail part 215 may further include a stoppingprotrusion 215 c formed along an inner circumferential surface of thelight source insertion hole 215 b. When the light source 230 is insertedinto the light source insertion hole 215 b, the front surface of thebase portion 232 may be stopped by the stopping protrusion 215 c and therear surface of the base portion 232 may be exposed to an outside of thelight emission tail part 215.

A flange section 215 a which comes into contact with the dissipationmodule 600 may be formed in the light emission tail part 215.

Any suitable type of dissipation module 600 may be used, regardless ofrespective functions of each of the plurality of light function modules.Hereinafter, the dissipation module 600 will be described.

The dissipation module 600 may be disposed behind the light emissionbody 210 to come into contact with the flange section 215 a.

The dissipation module 600 may include a heat pipe 610 in contact withat least part of the rear surface of the base portion 232.

The dissipation module 600 may be disposed in contact directly with eachof a plurality of light source modules 200, and the dissipation module600 may absorb heat of each of the plurality of light source modules200.

The light lamp for a vehicle may be configured such that two lightsource modules 200 are connected to a single dissipation module 600. Inthis case, the dissipation module 600 may be a part of the first lightfunction module 20 and a part of the second light function module 30.

A first light module 5 may include a first light distribution module300, one light source module 200 connected to the first lightdistribution module 300, a second light distribution module 400, anotherlight source module 200 connected to the second light distributionmodule 400, and a dissipation module 600 disposed to contact the twolight source modules 200.

The heat pipe 610 may be disposed to contact the plurality of lightsources 230. The heat pipe 610 may be disposed to contact each baseportion 232 of the plurality of light sources 230.

Referring to FIG. 15, the dissipation module 600 may further include adissipation plate 620 in contact with the heat pipe 610.

The dissipation plate 620 may include a fixing part 622 fixed to theflange section 215 a, and a light source pressing part 623 pressing theheat pipe 610. The dissipation plate 620 may be disposed to contact theheat pipe 610. Heat generated by the light source 230 may be transferredto the heat pipe 610. Then, the heat transferred to the heat pipe 610may be transferred to the dissipation plate 620.

The heat pipe 610 may be in direct contact with the flange section 215a. However, the heat pipe 610 may not be coupled directly to the flangesection 215 a. In some implementations, the heat pipe 610 may have aspace formed therein. The heat pipe 610 may contain a fluid in the spaceformed therein to promote heat transfer. In such a configuration, whenthe heat pipe 610 and the flange section 215 a are coupled to each otherusing a fastening member, the fluid contained in the heat pipe 610 mayleak. Accordingly, the heat pipe 610 is preferably fixed to the flangesection 215 a using another component, without being coupled directly tothe flange section 215 a.

For example, the dissipation plate 620 may be coupled directly to theflange section 215 a. In addition, the heat pipe 610 may be disposedbetween the flange section 215 a and the dissipation plate 620. Thedissipation plate 620 coupled to the flange section 215 a may applypressure on the heat pipe 610. The heat pipe 610 may be fixed betweenthe flange section 215 a and the light source pressing part 623.

The light function module may further include a fastening member thatpenetrates the flange section 215 a and the fixing part 622. Thedissipation plate 620 may be fixed to the flange section 215 a using thefastening member.

In addition, the dissipation plate 620 may include the light sourcepressing part 623 that comes into contact with a part of the rearsurface of the base portion 232. The light source 230 is supplied withpower and emits light through the light emitter 231, and thus, the lightsource 230 needs to be provided with power. The light source 230 mayfurther include a power supply unit 233 connected to the base portion232. The power supply unit 233 may be connected to the base portion 232and disposed behind the light emission body 210.

Thus, the heat pipe 610 may be disposed to contact a region of the baseportion 232 exposed to the outside of the light emission body 210,except for a region of the base portion 232 connected to the powersupply unit 233. The dissipation plate 620 may further include the lightsource pressing part 623 that comes into contact with a region of thebase portion 232 exposed to the outside the light emission body 210,except for a region of the base portion 232 connected to the powersupply unit 233 and a region of the base portion 232 contacting the heatpipe 610.

The light source pressing part 623 may absorb heat generated by thelight source 230.

Referring back to FIG. 14, the front surface of the base portion 232 maybe disposed to contact the stopping protrusion 215 c formed in the lightemission body 210, and the rear surface of the base portion 232 may comeinto contact with the heat pipe 610 or the dissipation plate 620. In oneexample, the light source 230 may be fixed between the heat pipe 610 andthe stopping protrusion 215 c. The light source 230 may be constrainedbetween the heat pipe 610 and the stopping protrusion 215 c in alongitudinal direction of the light emission body 210.

In another example, the light source 230 may be fixed between thedissipation plate 620 and the stopping protrusion 215 c. The lightsource 230 may be constrained between the dissipation plate 620 and thestopping protrusion 215 c in a longitudinal direction of the lightemission body 210.

The dissipation module 600 may further include a dissipation fin 630connected to the dissipation plate 620. The dissipation fin 630 maydissipate heat transferred from the dissipation plate 620 to theoutside. In order to enhance efficiency of heat transfer with outdoorair, a plurality of dissipation fins 630 may be provided.

Heat generated by the light source 230 may be transferred to thedissipation plate 620 through the heat pipe 610. The heat transferred tothe dissipation plate 620 may be dissipated to outdoor air through thedissipation fin 630.

In addition, the heat generated by the light source 230 may betransferred to the dissipation plate 620 through the light sourcepressing part 623. The heat transferred to the dissipation plate 620 maybe dissipated to outdoor air through the dissipation fin 630.

Still referring to FIG. 14, the heat pipe 610 may include an extensionpart 611 bent toward a rearward direction away from the light emissionbody 210. The heat pipe 610 may come into contact with a plurality oflight sources 230. Even in the case where the heat pipe 610 is not incontact with the light sources 230, the heat pipe 610 may include theelongated extension part 611 in order to improve efficiency of heattransfer. In addition, the dissipation module 600 may further include asub-dissipation plate 640 in contact with the extension part 611.Together with the extension part 611, the sub-dissipation plate 640 mayimprove dissipation efficiency.

Hereinafter, the first light distribution module 300 which is to becoupled to the light source module 200 will be described.

The first light distribution module 300 may output light, emitted by thelight source module 200, as a high beam.

Referring to FIGS. 11 and 14, the first light distribution module 300may include: a first projection lens 302; and a first light distributioncase 310 including a first light emission opening 306 formed at thefront thereof and a first projection lens accommodating space 308.

The first projection lens 302 may be mounted in the first projectionlens accommodating space 308.

The first projection lens 302 may have a convex front surface.

At least part of the front surface of the first projection lens 302 maybe exposed to the outside the first light distribution case 310 throughthe first light emission opening 306.

The first projection lens 302 may be larger than the light source lens250. The optical axis of the first projection lens 302 may coincide withthe optical axis X of the light source lens 250.

The first projection lens 302 may include a front surface, a rearsurface, and a circumferential surface. The front surface of the firstprojection lens 302 may be, for example, a curved surface convex towardthe front of the first projection lens 302. The rear surface of thefirst projection lens 302 may be, for example, a flat surface. The firstprojection lens 302 may be symmetric with respect to the optical axisthereof.

The first light distribution module 300 may further include a firstprojection lens retainer 320 which is coupled to the rear surface of thefirst light distribution case 310 and fixes the first projection lens302 to the first light distribution case 310.

The first light distribution case 310 may further include a firstprojection stopping protrusion 309 formed along a circumference of thefirst light emission opening 306. The first projection lens stoppingprotrusion 309 may be disposed to contact the front surface of the firstprojection lens 302. The first projection lens retainer 320 may be fixedto the first light distribution case 310 and may be disposed to contactthe rear surface of the first projection lens 302. The first projectionlens 302 may be disposed or fixed between the first projection lensretainer 320 and the first projection lens stopping protrusion 309.

The diffuser 290 installed in the light emission body 210 may beinstalled behind the first light distribution case 310. In this case,the diffuser 290 may be disposed behind the first projection lensretainer 320 of the first light distribution module 300 and may face therear surface of the first projection lens 302.

Hereinafter, the second light distribution module 400 coupled to thelight source module 200 will be described.

The second light distribution module 400 may output light emitted by thelight source module 200 as a booster beam. The booster beam maypartially increase a brightness of an emission area of the high beam.

The second light distribution module 400 may include: the secondprojection lens 402; and a second light distribution case 410 includinga second light emission opening 406 formed at the front thereof and asecond projection lens accommodating space 408.

The second projection lens 402 may be mounted in the second projectionlens accommodating space 408.

The second projection lens 402 may have a convex front surface.

At least part of the front surface of the second projection lens 402 maybe exposed to the outside of the second light distribution case 410through the second light emission opening 406.

The second projection lens 402 may be larger than the light source lens250. The optical axis of the second projection lens 402 may coincidewith the optical axis X of the light source lens 250.

The second projection lens 402 may include a front surface, a rearsurface, and a circumferential surface. The front surface of the secondprojection lens 402 may be, for example, a curved surface convex towardthe front of the second projection lens 402. The rear surface of thesecond projection lens 402 may be, for example, a flat surface. Thesecond projection lens 402 may be symmetric with respect to the opticalaxis of its own.

The second light distribution module 400 may further include a secondprojection lens retainer 420 which is coupled to the rear surface of thesecond light distribution case 410 and fixes the second projection lens402 to the second light distribution case 410.

The second light distribution case 410 may further include a secondprojection lens stopping protrusion formed along a circumference of thesecond light emission opening 406. The second projection lens stoppingprotrusion may be disposed to contact the front surface of the secondprojection lens 402. The second projection lens retainer 420 may befixed to the second light distribution case 410 and may be disposed tocontact the rear surface of the second projection lens 402. The secondprojection lens 402 may be disposed or fixed between the secondprojection lens retainer 420 and the second projection lens stoppingprotrusion.

The diffuser 290 installed in the light emission body 210 may beinstalled behind the second light distribution case 410. In this case,the diffuser 290 may be disposed behind the second projection lensretainer 420 and may be disposed to face the rear surface of the secondprojection lens 402.

The first projection lens 302 and the second projection lens 402 mayhave different curvatures and different radii, and therefore, they mayhave different emission areas.

With reference to FIGS. 16 and 17, an optical system of a light functionmodule including the first light distribution module 300 or the secondlight distribution module 400 will be described.

The following description is about an example in which the light source230 emits blue light and the phosphor 241 converts the blue light intoyellow light. In addition, while the first projection lens 302 isdepicted, the same description applies when the first projection lens302 is replaced with the second projection lens 402.

First, when the light source 230 is turned on, blue light A may beemitted by the light source 230 and then be incident on a light reducerin a direction parallel to the optical axis of the light source 230.

The light A emitted by the light source 230 in the direction parallel tothe optical axis of the light source 230 may be incident on the lightentrance surface of the first reducer lens 260. The light A may berefracted by the light entrance surface of the first reducer lens 260such that the width of the light A is reduced.

The light refracted by the light entrance surface of the first reducerlens 260 may propagate through the first reducer lens 260 and exit thefirst reducer lens 260 through the light exit surface of the firstreducer lens 260.

Light B output by the light exit surface of the first reducer lens 260may be incident on the light entrance surface of the second reducer lens270 in a direction parallel to the optical axis of the first reducerlens 260. Light B may be progressively reduced in width when travellingbetween the light exit surface of the first reducer lens 260 and thelight entrance surface of the second reducer lens 270. Light B is thenincident on, or received by, the light entrance surface of the secondreducer lens 270.

The light incident on the light entrance surface of the second reducerlens 270 may propagate through the second reducer lens 270 and exit fromthe second reduce lens 270 through the light exit surface of the secondreducer lens 270 in a direction parallel to the optical axis of thesecond reducer lens 270.

For example, while propagating through the first reducer lens 260, theair between the first reducer and the second reducer, and the secondreducer lens 270 in the respective order, the light A emitted by thelight source 230 may be reduced in width. Light C having a reduced widthmay be incident on the rear surface of the light source lens 250 in adirection parallel to the optical axis of the second reducer 270.

Light C then enters the light source lens 250 through the rear surfaceand becomes light D. Light D may propagate through the rear of thereflection unit 251, be incident on the rear surface of the reflectionunit 251, and then be reflected from the rear surface of the reflectionunit 251 toward the light source lens 250 as light E.

Light E reflected by the reflection unit 251 may be reflected in adirection toward the optical axis X of the light source lens 250 or maybe refracted by the rear surface of the light source lens 250 as lightF.

Light F refracted by the rear surface of the light source lens 250 maypropagate from the rear surface of the light source lens 250 to thereflective phosphor 241 to be incident on the phosphor 241.

Then, a wavelength of the light F incident on the phosphor 241 may beconverted by the phosphor 241, and white light may be emitted by thephosphor 241 toward the rear surface of the light source lens 250.

The light emitted by the phosphor 241 toward the rear surface of thelight source lens 250 may propagate through the light source lens 250 aslight G, which then may pass through the front surface of the lightsource lens 250 and be incident on the rear surface of a projectionlens.

The light incident on the projection lens may propagate through theprojection lens and then be refracted by the front surface of theprojection lens thereby to be output toward the front of the projectionlens in a direction parallel to the optical axis of the projection lens.

Light H output toward the front of the projection lens may be emittedtoward the front of the vehicle.

FIG. 18 illustrates an exploded perspective view of the lightdistribution module and the light source module shown in FIG. 9; FIG. 19illustrates a cross-sectional view taken along line T-T of FIG. 7; FIG.20 illustrates a cross-sectional view taken along line V-V of FIG. 7;FIG. 21 illustrates a configuration diagram of an optical system of thelight distribution module and the light source module shown in FIG. 7;and FIG. 22 illustrates a diagram of an optical path of the opticalsystem shown in FIG. 21;

Referring to FIGS. 18 and 19, a third light function module 40 out of aplurality of light function modules may include a third lightdistribution module 500, a light source module 200, and a dissipationmodule 600.

The third light distribution module 500 may include, for example, athird projection lens 502, a light distribution case 510, a lightdistribution cover 520, a focusing lens 530, and a shield retainerassembly 570. As another example, the third light distribution module500 may further include a collimator lens 540 and a collimator lensretainer 550.

The collimator lens 540, the focusing lens 530, a third projection lens502, and the shield retainer assembly 570 may be accommodated in thelight distribution case 510. The light distribution cover 520 may bedisposed to cover the light distribution case 510.

The collimator lens 540 may output light incident on the rear surfacethereof in a form of parallel light, or collimated light. The parallellight may be parallel to the optical axis of the collimator lens 540.

The rear surface of the collimator lens 540 may be, for example, a flatsurface or a curved surface that is concave toward the front of thecollimator lens 540. As another example, a part of the rear surface ofthe collimator lens 540 may be a flat surface and the rest of the rearsurface may be a curved surface that is concave toward the front of thecollimator lens 540.

The collimator lens 540 may be disposed such that the front surfacethereof faces the rear surface of the focusing lens 530.

Light incident on the rear surface of the collimator lens 540 may belight output by the light source lens 250. The light output by the lightsource lens 250 may be non-parallel light, such as scattered light.

The light distribution case 510 may include a light distribution headpart 511 and a light distribution tail part 512. The light distributionhead part 511 may include a collimator lens insertion hole 511 a formedat the rear thereof and a collimator lens accommodating space 511 b. Thelight distribution tail part 512 may be connected to the front of thelight distribution head part 511. The collimator lens 540 may be mountedin the collimator lens accommodating space 511 b.

The focusing lens 530 may have, for example, a convex rear surface, andthe collimator lens 540 may have, for example, a convex front surface.The optical axis of the focusing lens 530 and the optical axis of thecollimator lens 540 may coincide with each other.

Parallel light formed by the collimator lens 540 may be parallel to theoptical axis X of the collimator lens 540. In addition, the parallellight may be parallel to the optical axis of the focusing lens 530.

The light distribution cover 520 may cover the light distribution tailpart 512. The light distribution tail part 512 may accommodate thefocusing lens 530, the shield retainer assembly 570, and the thirdprojection lens 502.

The length of the light distribution cover 520 may be longer than adistance between the third projection lens 502 and the focusing lens530.

The focusing lens 530 may be disposed in front of the collimator lens540, and the front surface of the collimator lens 540 and the rearsurface of the focusing lens 530 may be disposed to face each other.

The third light distribution module 500 may further include a collimatorlens retainer 550 which is coupled to the rear surface of the lightdistribution head part 511 and fixes the collimator lens 540 to thelight distribution head part 511. The collimator lens retainer 550 maycome into contact with the rear surface of the collimator lens 540. Thecollimator lens retainer 550 may press the rear surface of thecollimator lens 540.

The light distribution head part 511 may further include a collimatorlens stopping protrusion 511 c formed along an inner circumferentialsurface of the collimator lens insertion hole 511 a. The collimator lensstopping protrusion 511 c may be disposed in front of the collimatorlens 540. The collimator lens stopping protrusion 511 c may come intocontact with the front surface of the collimator lens 540. Thecollimator lens stopping protrusion 511 c may press the front surface ofthe collimator lens 540.

The collimator lens retainer 550 may include a mounting part fixed tothe light distribution head part 511, and a pressing part pressing thecollimator lens 540. The collimator lens 540 may be disposed between thecollimator lens stopping protrusion 511 c and the collimator lensretainer 550. For example, the collimator lens 540 may be fixed betweenthe collimator lens stopping protrusion 511 c and the collimator lens540. As another example, the collimator lens 540 may be constrainedbetween the collimator lens stopping protrusion 511 c and the collimatorlens 540 in a longitudinal direction of the light distribution case 510.

The third light distribution module 500 may further include a fasteningmember penetrating the mounting part and fixed to the rear surface ofthe light distribution head part 511.

The light distribution head part 511 may include an insertion part 511 dthat protrudes from the periphery of the collimator lens retainer 550 tothe rear of the light distribution case 510. The third lightdistribution module 500 may be coupled to the light source module 200,and a part of the front of the light source module 200 may be insertedinto the rear of the third light distribution module 500. The front ofthe light source module 200 may be inserted into the insertion part 511d of the light distribution case 510.

The third light distribution module 500 may further include a diffuser290 which is disposed behind the collimator lens retainer 550 and facesthe rear surface of the collimator lens 540. The diffuser 290 may bedisposed in the light source module 200 or the third light distributionmodule 500.

The focusing lens 530 may include a front surface, a rear surface, and acircumferential surface. The front surface of the focusing lens 530 maybe, for example, a flat surface. The rear surface of the focusing lens530 may be, for example, a curved surface convex toward the rear of thefocusing lens 530. The focusing lens 530 may be symmetric with respectto the optical axis thereof.

The focusing lens 530 may concentrate light incident on, or received at,the rear surface and output the concentrated light. The focusing lens530 may concentrate light incident on the rear surface thereby to forman image forming plane. The image forming plane of the focusing lens 530may be formed in front of the focusing lens 530.

The image forming plane formed by the focusing lens 530 may be a planewhere an optical image is formed. If a screen is located at the imageforming plane, an image may be formed on the screen.

Referring to FIG. 22, by concentrating light incident on the rearsurface, the focusing lens 530 may form a focus FF. A focus FFcorresponds to a point at which parallel rays of light incident on therear surface of the focusing lens 530 converge. The focus FF of thefocusing lens 530 may be formed on the front side of the focusing lens530.

The front surface of the focusing lens 530 may be, for example, a flatsurface or a curved surface concave toward the rear of the focusing lens530. As another example, a part of the front surface of the focusinglens 530 may be a curved surface that is concave toward the rear of thefocusing lens 530.

The focusing lens 530 may be disposed between the light distributioncase 510 and the light distribution cover 520 and disposed in front ofthe collimator lens 540.

The light distribution case 510 may further include a focusing lensmounting groove 512 d. The focusing lens 530 may be mounted in thefocusing lens mounting groove 512 d. The focusing lens mounting groove512 d may be disposed to contact the front surface and the rear surfaceof the focusing lens 530. When mounted in the focusing lens mountinggroove 512 d, the focusing lens 530 may be constrained in a longitudinaldirection of the light distribution case 510.

The light distribution cover 520 may further include a focusing lensmounting groove 521. The focusing lens 530 may be mounted in thefocusing lens mounting groove 521. The focusing lens mounting groove 521may be disposed to contact the front surface and the rear surface of thefocusing lens 530. When mounted on the focusing lens mounting groove521, the focusing lens 530 may be constrained in a longitudinaldirection of the light distribution cover 520.

Referring to FIG. 20, the shield retainer assembly 570 may include ashield 573, a mirror 571, and a mirror mounting part 572. The shieldretainer assembly 570 may be disposed in front of the focusing lens 530.The front surface of the focusing lens 530 may be disposed to face theshield 573. The shield 573 may be, for example, disposed parallel to thefront surface of the focusing lens 530. As another example, the shield573 may be disposed parallel to the rear surface of the collimator lens540. As yet another example, the shield 573 may be disposedperpendicular to the optical axis of the focusing lens 530.

The shield 573 may shield a part of light passing through the imageforming plane of the focusing lens 530. The shield 573 may include anopening 573 a. A plurality of openings 573 a may be formed in the shield573. For example, the shield 573 may include an upper opening 573 cformed above the optical axis of the focusing lens 530, and in addition,the shield 573 may include a lower opening 573 d formed below theoptical axis of the focusing lens 530.

The shield 573 may allow a part of light emitted by the focusing lens530 to pass through the opening 573 a, and shield, or block, the rest ofthe light. The opening 573 a formed in the shield 573 may form a cut-offline. Light distribution pattern achieved by the third lightdistribution module 500 may be adjusted according to the shape of thecut-off line of the opening 573 a. When the third light distributionmodule 500 is used to generate a low beam, the cut-off line of theopening 573 a may be adjusted to achieve a light distribution patternrequired for the low beam.

As such, a pattern of light passing through the image forming plane maybe changed according to a shape of the shield 573. Accordingly, it ispossible to achieve various light distribution patterns by changing theshape of the shield 573.

The collimator lens retainer 550 may include a light through hole. Lightemitted by the light source module 200 may pass through the lightthrough hole and then be incident on the rear surface of the collimatorlens 540.

In the case where the shield 573 include a single opening, the width ofthe light through hole may be larger than the width of the singleopening. Light incident on the rear surface of the collimator lens 540may be output in a form of parallel light, and the parallel light may beincident on the rear surface of the focusing lens 530. As the focusinglens 530 causes rays of light converge, the opening included in theshield 573 disposed in front of the focusing lens 530 may be smallerthan the width of the light through hole.

In addition, in the case where the shield 573 has a single opening, theheight of the light through hole may be greater than the width of thesingle opening. Light incident on the rear surface of the collimatorlens 540 may be output in a form of parallel light, and the parallellight may be incident on the rear surface of the focusing lens 530. Asthe focusing lens 530 is configured to concentrate light, the openingincluded in the shield 573 disposed in front of the focusing lens 530may be smaller than the height of the light through hole.

In addition, in the case where the shield 573 includes a plurality ofopenings, the width of the light through hole may be greater than themaximum width of each of the openings. Light incident on the rearsurface of the collimator lens 540 may be output in a form of parallellight, and the parallel light may be incident on the rear surface of thefocusing lens 530. As the focusing lens 530 is configured to concentratelight, a width of each of the openings included in the shield 573disposed in front of the focusing lens 530 may be smaller than the widthof the light through hole.

In addition, in the case where the shield 573 includes a plurality ofopenings, the height of the light through hole may be greater than a sumof the heights of the openings. Light incident on the rear surface ofthe collimator lens 540 may be output in a form of parallel light, andthe parallel light may be incident on the rear surface of the focusinglens 530. As the focusing lens 530 is configured to concentrate rays oflight, the sum of the heights of the openings included in the shield 573disposed in front of the focusing lens 530 may be smaller than theheight of the light through hole.

In the case where the shield 573 includes a single opening, the width ofthe focusing lens 530 may be greater than the width of the opening.Light incident on the rear surface of the collimator lens 540 may beoutput in a form of parallel light, and the parallel light may beincident on the rear surface of the focusing lens 530. As the focusinglens 530 is configured to concentrate rays of light, the openingincluded in the shield 573 disposed in front of the focusing lens 530may be smaller than the width of the focusing lens 530.

In addition, in the case where the shield 573 includes a single opening,the height of the focusing lens 530 may be greater than the width of theopening. Light incident on the rear surface of the collimator lens 540may be output in a form of parallel light, and the parallel light may beincident on the rear surface of the focusing lens 530. As the focusinglens 530 is configured to concentrate rays of light, the openingincluded in the shield 573 disposed in front of the focusing lens 530may be smaller than the height of the focusing lens 530.

In addition, in the case where the shield 573 includes a plurality ofopenings, the width of the focusing lens 530 may be greater than themaximum width of each of the openings. Light incident on the rearsurface of the collimator lens 540 may be output in a form of parallellight, and the parallel light may be incident on the rear surface of thefocusing lens 530. As the focusing lens 530 is configured to concentraterays of light, the width of each of the openings included in the shield573 disposed in front of the focusing lens 530 may be smaller than thewidth of the focusing lens 530.

In addition, in the case where the shield 573 includes a plurality ofopenings, the height of the focusing lens 530 may be greater than a sumof the heights of the openings. Light incident on the rear surface ofthe collimator lens 540 may be output in a form of parallel light, andthe parallel light may be incident on the rear surface of the focusinglens 530. As the focusing lens 530 is configured to concentrate rays oflight, the sum of the heights of the openings included in the shield 573disposed in front of the focusing lens 530 may be smaller than the widthof the focusing lens 530.

The shield 573 may be disposed to face a lower portion of the frontsurface of the focusing lens 530. The focusing lens 530 may be dividedalong its optical axis into an upper portion and a lower portion. Theupper portion is a portion above the optical axis, and the lower portionis a portion below the optical axis.

The shield 573 may be a member including a flat surface, and the frontsurface of the focusing lens 530 may be a flat surface. The fact thatthe shield 573 is disposed to face the front surface of the focusinglens 530 may mean that the flat surface of the shield 573 and the frontsurface of the focusing lens 530 can be disposed parallel to each other.

Accordingly, the shield 573 may be disposed parallel to the frontsurface of the focusing lens 530 and face a portion of the focusing lens530 below the optical axis of the focusing lens 530.

By disposing the shield 573 to face the lower portion of the frontsurface of the focusing lens 530, the third light distribution module500 may generate a low beam.

The image forming plane of the focusing lens 530 may be formed at apredetermined distance from the front surface of the focusing lens 530.As the focusing lens 530 is configured to concentrate rays of light, thesize of light passing through the focusing lens 530 may be reducedrelative to the size of light incident on the rear surface of thefocusing lens 530.

Accordingly, the shield 573 may be smaller than the focusing lens 530.For example, the shield 573 may be smaller than the front surface of thefocusing lens 530.

The shield retainer assembly 570 may include the mirror 571, the mirrormounting part 572 on which the mirror 571 is mounted, and the shield 573having at least one opening formed therein. The mirror mounting part 572and the shield 573 may be angled, for example orthogonal, to each other.

The mirror mounting part 572 may be connected to the shield 573. In someimplementations, the mirror mounting part 572 may be disposed at anangle, e.g., orthogonal, to the shield 573. In the case where an upperopening 573 c and a lower opening 573 d are formed in the shield 573,the mirror mounting part 572 may be connected between the upper opening573 c and the lower opening 573 d.

The mirror 571 may be mounted on the mirror mounting part 572. Themirror 571 may include a reflective surface. The reflective surface maybe, for example, disposed to face the bottom of the light distributioncase 510.

The shield retainer assembly 570 may further include an adhesive member574. The adhesive member 574 may be disposed between the mirror mountingpart 572 and the mirror 571. The mirror 571 may be fixed to or mountedon the mirror mounting part 572 using the adhesive member 574. A groovein which the adhesive member 574 is to be disposed may be formed in themirror mounting part 572. The adhesive member 574 may be disposedbetween the reflective surface of the mirror 571 and the mirror mountingpart 572.

The mirror 571 may be disposed parallel to the optical axis of thefocusing lens 530.

In the case where the front surface of the focusing lens 530 is a flatsurface, the mirror 571 may be disposed perpendicular to the frontsurface of the focusing lens 530.

The mirror 571 may include a reflective surface that reflects lightpassing through an image forming plane formed by the focusing lens 530.

The mirror 571 may be disposed to reflect light passing through thelower opening 573 d of the shield 573.

The reflective surface of the mirror 571 may be disposed at apredetermined distance from the optical axis of the focusing lens 530.

The mirror 571 may be disposed parallel to the optical axis of the thirdprojection lens 502.

In the case where the rear surface of the third projection lens 502 is aflat surface, the mirror 571 may be disposed perpendicular to the rearsurface of the third projection lens 502.

The reflective surface of the mirror 571 may be disposed at apredetermined distance from the third projection lens 502.

The mirror 571 may be disposed to reflect light passing through thelower opening 573 d of the shield 573, and the light reflected by themirror 571 may be incident on the rear surface of the third projectionlens 502. The light reflected by the mirror 571 may be incident on aportion of the third projection lens 502 below the optical axis of thethird projection lens 502.

Light passing through the upper opening 573 c of the shield 573 may beincident on a portion of the third projection lens 502 below the opticalaxis of the third projection lens 502.

The light incident on the portion of the third projection lens 502 belowthe optical axis of the third projection lens 502 may be output as a lowbeam.

An overall brightness of the low beam may be a combination of thebrightness of light passing through the upper opening 573 c of theshield 573 and the brightness of light reflected by the mirror 571.

The focusing lens 530 may form a focus on the front thereof. The focusFF formed by the focusing lens 530 may be, for example, positionedbetween the third projection lens 502 and the focusing lens 530.

In the case where the focus FF formed by the focusing lens 530 ispositioned before the rear surface of the third projection lens 502, thelight passing through the upper opening 573 c of the shield 573 may beincident on a portion of the third projection lens 502 above the opticalaxis of the third projection lens 502. The light incident on the portionof the third projection lens 502 above the optical axis of the thirdprojection lens 502 may be output above the optical axis of the thirdprojection lens 502. When the light is output above the optical axis ofthe third projection lens 502, the resulting beam of light may not be alow beam.

Accordingly, in order to generate a low beam, the third projection lens502 is preferably disposed to position the focus FF formed by thefocusing lens 530 between the focusing lens 530 and the third projectionlens 502.

The focusing lens 530, the shield 573, the mirror 571, and the thirdprojection lens 502 may be arrange in the respective order along adirection of propagation of light incident on the rear surface of thefocusing lens 530.

The shield retainer assembly 570 may be disposed between the lightdistribution case 510 and the light distribution cover 520 and disposedin front of the focusing lens 530.

The light distribution case 510 may further include a mounting part 512a protruding from an inner surface of the light distribution case. Theshield 573 may further include a fixing part 573 b spaced apart from anopening of the shield 573. The fixing part 573 b may be fixed to themounting part 512 a.

The shield retainer assembly 570 may be disposed in front of thefocusing lens 530. Accordingly, the mounting part 512 a may be disposedin front of the focusing lens 530. In addition, the mounting part 512 amay be disposed behind the third projection lens 502. Furthermore, themounting part 512 a may be disposed between the third projection lens502 and the focusing lens 530.

The third light distribution module 500 may further include a couplingmember s penetrating the mounting part 512 a and the fixing part 573 b.The shield retainer assembly 570 may be fixed to the light distributioncase 510 using the coupling member S.

The coupling member S may be disposed such that a longitudinal directionof the coupling member S is parallel to a longitudinal direction of thelight distribution case 510.

In this case, a light distribution pattern formed by the third lightdistribution module 500 may be changed according to an angularorientation and a location of the shield retainer assembly 570 whenfixed to the light distribution case 510. Accordingly, to achieve adesired light distribution pattern, a structure which enables fineadjustments of a location and angular orientation of the shield retainerassembly 570 is required.

The shield retainer assembly 570 may be formed from an elastic material.This may, for example, enable fine adjustments. In another example, theshield retainer assembly 570 may be formed from a flexible material.

The light distribution module 500 may further include a side-surfacehole 512 b formed on one side surface of the light distribution case510, and a horizontally moving coupler, such as horizontally movingscrew 581, that is inserted into the side-surface hole 512 b. Thehorizontally moving screw 581 may horizontally move along theside-surface hole 512 b, for example, by rotating the horizontallymoving screw 581.

The horizontally moving screw 581 may press one side surface of themirror mounting part 572 in a horizontal direction. The position of theshield retainer assembly 570 may be adjusted according to the movementof the horizontally moving screw 581. In general, any suitablehorizontally moving coupler may be implemented.

In addition, the light distribution module 500 may further include abottom-surface hole 512 c formed in the bottom surface of the lightdistribution case 510, and a vertically moving coupler, such asvertically moving screw 582, that is inserted into the bottom-surfacehole 512 c. The vertically moving screw 582 may vertically move alongthe bottom-surface hole 512 c, for example, by rotating the verticallymoving screw 582.

The vertically moving screw 582 may press the bottom surface of themirror mounting part 572 in a vertical direction. The position of theshield retainer assembly 570 may be adjusted according to the movementof the vertically moving screw 582. In general, any suitable verticallymoving coupler may be implemented.

The light distribution module 500 may further include a support clip 583fixed to the inner side surface of the light distribution case 510. Thesupport clip 583 may press the top surface of the mirror mounting part572 in a downward direction.

The third light distribution module 500 may further include the thirdprojection lens 502. The third projection lens 502 may include a frontsurface, a rear surface, and a circumferential surface. The frontsurface of the third projection lens 502 may be, for example, a curvedsurface convex toward the front of the third projection lens 502. Therear surface of the third projection lens 502 may be, for example, aflat surface. The third projection lens 502 may be symmetric withrespect to the optical axis thereof.

The optical axis of the third projection lens 502 may coincide with theoptical axis of the focusing lens 530. In another example, the thirdprojection lens 502 may coincide with the optical axis of the collimatorlens 540.

The rear surface of the third projection lens 502 may be, for example, aflat surface or a curved surface concave toward the front of the thirdprojection lens 502. As another example, a part of the rear surface ofthe third projection lens 502 may be a flat surface and the rest of therear surface may be a curved surface concave toward the front of thethird projection lens 502.

The rear surface of the third projection lens 502 may be, for example,parallel to the front surface of the focusing lens 530. As anotherexample, the rear surface of the third projection lens 502 may beparallel to the rear surface of the collimator lens 540.

The shield 573 may be disposed to face the lower portion of the rearsurface of the third projection lens 502. The third projection lens 502may be divided along its optical axis into an upper portion and a lowerportion. The upper portion may be a portion above the optical axis, andthe lower portion may be a portion below the optical axis.

The shield 573 may be a member including a flat surface, and the rearsurface of the third projection lens 502 may be a flat surface. In thiscase, the fact that the shield 573 is disposed to face the rear surfaceof the third projection lens 502 may indicate that the flat surface ofthe shield 573 and the rear surface of the third projection lens 502 areable to be disposed parallel to each other.

Accordingly, the shield 573 may be disposed parallel to the rear surfaceof the third projection lens 502 and face an area of the thirdprojection lens 502 below the optical axis thereof.

The third projection lens 502 may be disposed to position the imageforming plane of the focusing lens 530 between the third projection lens502 and the focusing lens 530.

The shield retainer assembly 570 may be, for example, disposed at theimage forming plane. As another example, the shield 573 may be disposedat the image forming plane.

The focus FF of the focusing lens 530 may be formed on the front side ofthe focusing lens 530. The third projection lens 502 can then bedisposed such that the focus FF of the focusing lens 530 is positionedbetween the third projection lens 502 and the focusing lens 530.

The third light distribution module 500 may be configured such that thecollimator lens 540, the focusing lens 530, the shield 573, and theprojection lens 502 are arranged in the respective order along theX-axis.

The light distribution module 500 may further include a third projectionlens 502, and the third projection lens 502 may be disposed between thelight distribution case 510 and the light distribution cover 520 anddisposed in front of the shield retainer assembly 570.

Referring to FIG. 18, the light distribution cover 520 may include acover shield 523 connected thereto in a downward direction. The covershield 523 may be disposed between the third projection lens 502 and theshield retainer assembly 570. The cover shield 523 may be disposed toface the rear surface of the third projection lens 502.

The cover shield 523 may prevent light from being emitted in a patternother than a light distribution pattern formed by the third lightdistribution module 500. Accordingly, the cover shield 523 may includeat least one opening 523 a. The cover shield 523 may be formed in adifferent shape according to the cut-off line of the opening 523 aformed in the shield 573 or the number of openings 573 a formed in theshield 573.

The light distribution case 510 may further include a third projectionlens mounting groove 512 e. The third projection lens 502 may be mountedin the projection lens mounting groove 512 e. The third projection lensmounting groove 512 e may be disposed to contact the front surface andthe rear surface of the third projection lens 502. When mounted in thethird projection lens mounting groove 512 e, the third projection lens502 may be constrained in a longitudinal direction of the lightdistribution case 510.

The light distribution cover 520 may further include a third projectionlens mounting groove 522. The third projection lens 502 may be mountedin the third projection lens mounting groove 522. The third projectionlens mounting groove 522 may be disposed to contact the front surfaceand the rear surface of the third projection lens 502. When mounted inthe third projection lens mounting groove 522, the third projection lens502 may be constrained in a longitudinal direction of the lightdistribution cover 520.

The light distribution module 500 may include a light emission opening512 f. The light emission opening 512 f may be formed by coupling thelight distribution tail part 512 and the light distribution cover 520.At least part of the front surface of the third projection lens 502 maybe exposed to the outside of the light distribution case 510 through thelight emission opening 512 f.

The second light module 6 may include two third light distributionmodules 500, two light source modules 200, and one dissipation module600 connected to the two light source modules 200.

Referring to FIGS. 21 and 22, an optical system of a light functionmodule including a third light distribution module 500 will bedescribed.

The following description is about an example in which the light source230 emits blue light and the phosphor 241 converts the blue light intoyellow light.

First, when the light source is turned on 230, the light source 230 mayemit blue light A and the light A emitted by the light source 230 may beincident on a light reducer in a direction parallel to the optical axisof the light source 230.

The light A emitted by the light source 230 in the direction parallel tothe optical axis of the light source 230 may be incident on a lightentrance surface of the first reducer lens 260 and then be refracted bythe light entrance surface of the first reducer lens 260 such that thewidth of the light A is reduced.

The light refracted by the light entrance surface of the first reducerlens 260 may pass through the first reducer lens 260 and then be emittedfrom a light exit surface of the first reducer lens 260.

Light B output by the light exit surface of the first reducer lens 260may be incident on a light entrance surface of the second reducer lens270 in a direction parallel of the optical axis of the first reducerlens 260. Light B may be progressively reduced in width when passingbetween the light exit surface of the first reducer lens 260 and thelight entrance surface of the second reducer lens 270. Light B is thenincident on, or received by, the light entrance surface of the secondreducer lens 270.

The light incident on the light entrance surface of the second reducerlens 270 may propagate through the second reducer lens 270 and exit fromthe second reduce lens 270 through the light exit surface of the secondreducer lens 270 in a direction parallel to the optical axis of thesecond reducer lens 270.

As such, in some implementations, the light A emitted by the lightsource 230 may be reduced in width when passing through the firstreducer lens 260, the air between the first reducer and the secondreducer, and the second reducer lens 270 in the respective order. LightC having reduced width may be incident on a rear surface of the lightsource lens 250 in a direction parallel to the optical axis of thesecond reducer lens 270.

Light C incident on the rear surface of the light source lens 250 maypass through the rear of the reflection unit 251 to become light D, andthen be incident on the rear surface of the reflection unit 251, or maybe reflected from the rear surface of the reflection unit 251 as lightE.

Light E reflected by the reflection unit 251 may be reflected in adirection toward the optical axis X of the light source lens 250 or maybe refracted by the rear surface of the light source lens 250 as lightF.

Light F refracted by the rear surface of the light source lens 250 maypropagate from the rear surface of the light source lens 250 to thereflective phosphor 241 to be incident on the phosphor 241.

Then, a wavelength of the light F incident on the phosphor 241 may beconverted by the phosphor 241, and white light may be emitted by thephosphor 241 toward the rear surface of the light source lens 250.

The light emitted by the phosphor 241 toward the rear surface of thelight source lens 250 may propagate through the light source lens 250 aslight G, which then may pass through the front surface of the lightsource lens 250 and then be incident on a collimator lens 540 throughthe rear surface of the collimator lens 540.

The light incident on the collimator lens 540 may propagate through thecollimator lens 540 and then be refracted by the front surface of thecollimator lens 540 and output toward the front side of the collimatorlens in a direction parallel to the optical axis of the collimator lens540 as light H.

Light H output toward the front of the collimator lens 540 may beparallel light.

The light H may then be incident on the focusing lens 530 through therear surface of the focusing lens 530 as light I.

Light I incident on the focusing lens 530 may be refracted by the rearsurface of the focusing lens 530 and propagates through the focusinglens 530. At this point, the light I may be converging due to therefraction by the rear surface of the focusing lens 530. Light I thenexits the focusing lens 530 through the front surface of the focusinglens 530 to be output toward the front side of the focusing lens 530 aslight J.

Light J output toward the front side of the focusing lens 530 may passthrough the image forming plane and the focus FF. A part of the light Joutput toward the front of the focusing lens 530 may be shielded by theshield 573 disposed at the image forming plane.

A part of the light J output toward the front side of the focusing lens530 may be light K1 passing through the upper opening 573 c formed onthe shield 573.

The rest of the light J output toward the front side of the focusinglens 530 may be light K2 passing through the lower opening 573 d formedin the shield 573.

The light K1 may converge at one point when passing through the focusFF, and then be incident on a portion of the focusing lens 530 below theoptical axis of the focusing lens 530 as light L1.

Light L1 passing through the upper opening 573 c and then the focus FFof the focusing lens 530 may be incident on the third projection lens502 through the rear surface of the third projection lens 502.

The light incident on the third projection lens 502 may pass through thethird projection lens 502 and then be refracted by the front surface ofthe third projection lens 502 to be output toward the front side of thethird projection lens 502 in a direction parallel to the optical axis ofthe third projection lens 502.

Light M1 output toward the front of the third projection lens 502 may bea low beam. In addition, the light M1 emitted toward the front of thethird projection lens 502 may be parallel light.

The light K2 passing through the lower opening 573 d may be incident onthe mirror 571. The mirror 571 may reflect the light K2 toward the thirdprojection lens 502 as light L2.

Light L2 reflected by the mirror 571 may be incident on the thirdprojection lens 502 without passing through the focus FF of the focusinglens 530.

The light incident on the third projection lens 502 may propagatethrough the third projection lens 502 and then be refracted by the frontsurface of the third projection lens 502 to be output toward the frontside of the third projection lens 502 in a direction parallel to theoptical axis of the third projection lens 502.

Light M2 emitted toward the front side of the third projection lens 502may be a low beam. In addition, the light M2 emitted toward the front ofthe third projection lens 502 may be parallel light.

The light M1 passing through the upper opening 573 c of the shield 573and output toward the front side of the third projection lens 502 mayoverlap the light M2 passing through the lower opening 573 d of theshield 573 and output toward the front side of the third projection lens502. As a result, an amount of light emitted through the thirdprojection lens 502 may be increased.

Now turning to various arrangements of the plurality of light functionmodules, a plurality of light function modules 20, 30, and 40 may bearranged in various ways with respect to one another. According to animplementation of the present disclosure, the first light functionmodule 20 and the second light function module 30 may be arrangedvertically above or below each other. The first light function module 20and the third light function module 40 may be spaced apart from eachother in a horizontal direction.

A dissipation module 600 of the first light function module 20 mayinclude a heat pipe 610 disposed to contact a light source 230 of thefirst light function module 20. The heat pipe 610 disposed to contactthe first light function module 20 may be disposed to contact either orboth the light source 230 of the second light function module 30 and alight source 230 of the third light function module 40.

The dissipation module 600 of the first light function module 20 mayinclude a dissipation plate 620 disposed to contact the light source 230of the first light function module 20, and the dissipation plate 620 maybe disposed to contact either or both the light source 230 of the secondlight function module 30 and the light source 230 of the third lightfunction module 40.

Hereinafter, configurations and effects different from the aboveimplementations will be described with respect to their differences fromthe previously described implementations.

FIG. 23 illustrates a perspective view of an example of an arrangementof light function modules according to some implementations of thepresent disclosure.

Referring to FIG. 23, the light lamp for a vehicle may include aplurality of light function modules 20, 30, and 40. In someimplementations, the light function modules 20, 30, and 40 may bearrange or stacked in a vertical direction. While vertical stacking oftwo modules is shown, additional modules may be stacked in the verticaldirection.

FIG. 24 illustrates a perspective view of an example of an arrangementof light function modules according to some implementations of thepresent disclosure.

Referring to FIG. 24, the light lamp for a vehicle may include aplurality of light function modules 40 arranged or stacked in a verticaldirection. In some implementations, one of the light function modules 40may be fixed to another light function module 40. In someimplementations, one of the light function modules 40 may be in contactwith another light function module 40 but not fixed thereto. In someimplementations, one of the light function modules 40 may be guidedalong a longitudinal direction of another light function module 40 suchthat one of the light function modules 40 may slide on top of the otherlight function module 40 along the longitudinal direction. In someimplementations, the respect fronts of the light function modules 40 maybe offset along the longitudinal direction.

FIG. 25 illustrates a perspective view of an example of an arrangementof light function modules according to some implementations of thepresent disclosure.

Referring to FIG. 25, the light lamp for a vehicle may include theplurality of light function modules 40 arranged or spaced apart from oneanother in a horizontal direction. In some implementations, one of thelight function modules 40 may be fixed to a side of another lightfunction module 40. In some implementations, one of the light functionmodules 40 may be in contact with a side of another light functionmodule 40, but not fixed thereto. In some implementations, one of thelight function modules 40 may be guided along a longitudinal directionof another light function module 40 such that one of the light functionmodules 40 may slide adjacent to the other light function module 40along the longitudinal direction. In some implementations, the respectfronts of the light function modules 40 may be offset along thelongitudinal direction.

FIG. 26 illustrates a perspective view of an example of an arrangementof light function modules according to some implementations of thepresent disclosure.

Referring to FIG. 26, a heat pipe 610 included in a dissipation module600′ may further include a connector 612 that is disposed to contact aphosphor 241 of a light source module 200.

In addition, the dissipation module 600′ may further include asub-dissipation plate 640′ which is connected to the heat pipe 610 anddisposed between the phosphor 241 and a light source 230.

The heat pipe 610 may dissipate heat generated by the light source 230and heat generated by the phosphor 241.

FIG. 27 illustrates a perspective view of an example of an arrangementof light function modules according to some implementations of thepresent disclosure.

Referring to FIG. 27, there may be provided a plurality of dissipationmodules 600″, and a heat pipe 610 of each dissipation module 600″ mayinclude an extension part 611′. Each extension part 611′ may beconnected to a dissipation plate 620′. In some implementations, a singledissipation plate 620′ may be connected to a plurality of extensionparts 611′.

FIG. 28 illustrates a perspective view of an example of a shieldretainer assembly according to some implementations of the presentdisclosure.

Referring to FIG. 28, a shield retainer assembly 570′ may be configuredto allow a mirror 571 to be mounted in the shield retainer assembly 570′using a fastening bolt 576.

To that end, the shield retainer assembly 570′ may further include thefastening bolt 576. The fastening bolt 576 may include a thread 576 band a head 576 a connected to the thread 576 b.

The thread 576 b may be fixed to a mirror mounting part 572, and thehead 576 a may press the mirror 571. As the head 576 a presses themirror 571, the fastening bolt 576 may fix the mirror 571 to the mirrormounting part 572.

FIG. 29 illustrates a perspective view of another example of a shieldretainer assembly according to some implementations of the presentdisclosure.

Referring to FIG. 29, a shield retainer assembly 570″ may furtherinclude a mirror bracket 575 on which a mirror 571 is mounted, and themirror bracket 575 may be fixed to a mirror mounting part 572.

The shield retainer assembly 570″ may further include a fastening boltwhich penetrates the mirror bracket 575 and the mirror mounting part572. The fastening bolt 576 may include a thread 576 b and a head 576 aconnected to the thread 576 b. The thread 576 b may be fixed to themirror mounting part 572, and the head 576 a may press the mirrorbracket 575 and fix the mirror bracket 575 to the mirror mounting part572.

FIG. 30 illustrates an exploded perspective view of an example of alight distribution module according to some implementations of thepresent disclosure.

Referring to FIG. 30, a light distribution module 500 may furtherinclude a mounting part 512 a protruding inwardly in a lightdistribution case 510. A shield retainer assembly 570 may furtherinclude a fixing part 573 b′ connected to the light distribution case510, and the fixing part 573 b′ may be fixed to the mounting part 512 a.

The light distribution module 300 may further include a fastening member576, and the fastening member 576 may penetrate the mounting part 512 aand the fixing part 573 b′.

The fastening member 576 may be disposed such that a longitudinaldirection of the fastening member 576 is perpendicular to a longitudinaldirection of the light distribution case 510.

In such implementations where the shield retainer assembly 570 is fixedto the light distribution case 510 using the fastening member 576 thatis perpendicular to the longitudinal direction of the light distributioncase 510, it may be possible to omit or simplify a structure that finelyadjusts the shield retainer assembly 570. When fixing the shieldretainer assembly 570 to the light distribution case 510, it may bepossible to adjust the shield retainer assembly 570 in a verticaldirection of the light distribution case 510. Accordingly, a verticallymoving coupler, such as a screw, for finely adjusting the shieldretainer assembly 570 in the vertical direction may be omitted.

FIG. 31 illustrates a cross-sectional view of an example of a thirdlight distribution module according to some implementations of thepresent disclosure.

Referring to FIG. 31, a third light distribution module 500′ may includea light distribution cover 520′ including at least one pressingprotrusion 524 or 525.

The pressing protrusion 524 or 525 may protrude from the bottom of thelight distribution cover 520′.

A focusing lens 530′ may include a front surface, a rear surface, and acircumferential surface connecting the front surface and the rearsurface. The focusing lens 530′ may include a groove 531 formed on thecircumferential surface.

When the light distribution case 510 and the light distribution cover520′ are coupled to each other, the pressing protrusion 524 may beinserted into, and press the groove 531. Through this, the focusing lens530′ may be fixed or constrained in a vertical direction of the lightdistribution case 510.

A third projection lens 502′ may include a front surface, a rearsurface, a circumferential surface connecting the front surface and therear surface, and a groove 561 formed on the circumferential surface.When the light distribution case 510 and the light distribution cover520′ are coupled to each other, the pressing protrusion 525 may beinserted into, and press the groove 561. Through this, the thirdprojection lens 502′ may be fixed or constrained in a vertical directionof the light distribution case 510.

Various implementations of the light lamp for a vehicle of the presentdisclosure may be included in a vehicle.

It will be understood that various modifications may be made withoutdeparting from the spirit and scope of the claims. For example,advantageous results still could be achieved if steps of the disclosedtechniques were performed in a different order and/or if components inthe disclosed systems were combined in a different manner and/orreplaced or supplemented by other components. Accordingly, otherimplementations are within the scope of the following claims.

What is claimed is:
 1. A light lamp for vehicle, comprising a pluralityof light function modules, each of the plurality of light functionmodules comprising: a light source module comprising a light source; adissipation module disposed behind the light source module andconfigured to dissipate heat generated by the light source; and a lightdistribution module disposed in front of the light source module andconfigured to distribute light emitted by the light source module, thelight distribution module comprising: a focusing lens configured toconcentrate incident light; a shield retainer assembly configured toblock at least part of light output by the focusing lens and to reflectat least part of light that is not blocked; a light distribution caseconfigured to accommodate the focusing lens and the shield retainerassembly; and a light distribution cover configured to cover the lightdistribution case.
 2. The light lamp of claim 1, wherein the lightdistribution module further comprises a collimator lens configured tocollimate light incident from the light source module to form parallellight rays, wherein the light distribution case comprises: a lightdistribution head part having a collimator lens accommodating space anda collimator lens insertion hole formed at a rear of the lightdistribution head part; and a light distribution tail part connected toa front of the light distribution head part, and wherein the collimatorlens is configured to be mounted in the collimator lens accommodatingspace.
 3. The light lamp of claim 2, wherein the light distributioncover is configured to cover the light distribution tail part.
 4. Thelight lamp of claim 2, wherein the focusing lens is disposed in front ofthe collimator lens, and wherein a front surface of the collimator lensand a rear surface of the focusing lens are disposed to face each other.5. The light lamp of claim 2, wherein the light source module is coupledto a rear surface of the light distribution head part, and wherein thelight distribution module further comprises a collimator lens retainerconfigured to fix the collimator lens to the light distribution headpart.
 6. The light lamp of claim 5, wherein the light source module isdisposed behind the collimator lens retainer, and further comprises adiffuser that faces a rear surface of the collimator lens.
 7. The lightlamp of claim 2, wherein the focusing lens is disposed between the lightdistribution case and the light distribution cover, and is disposed infront of the collimator lens.
 8. The light lamp of claim 7, wherein thelight distribution case further comprises a focusing lens mountinggroove, and wherein the focusing lens is configured to be mounted in thefocusing lens mounting groove and is constrained in a longitudinaldirection of the light distribution case.
 9. The light lamp of claim 7,wherein the light distribution cover further comprises a focusing lensmounting groove, and wherein the focusing lens is configured to bemounted in the focusing lens mounting groove and is constrained in alongitudinal direction of the light distribution cover.
 10. The lightlamp of claim 1, wherein the shield retainer assembly is disposedbetween the light distribution case and the light distribution cover,and is disposed in front of the focusing lens.
 11. The light lamp ofclaim 1, wherein the shield retainer assembly comprises: a mirror; amirror mounting part in which the mirror is configured to be mounted;and a shield having at least one opening formed therein, wherein themirror mounting part and the shield are orthogonal to each other. 12.The light lamp of claim 11, wherein the shield is disposed to face afront surface of the focusing lens.
 13. The light lamp of claim 11,wherein the light distribution case further comprises a mounting partprotruding from an inner surface of the light distribution case, whereinthe shield further comprises a fixing part that is spaced apart from theat least one opening of the shield, and wherein the fixing part is fixedto the mounting part.
 14. The light lamp of claim 11, wherein the lightdistribution module further comprises: a side-surface hole formed on aside surface of the light distribution case; and a horizontally movingcoupler inserted into the side-surface hole, and wherein thehorizontally moving coupler is configured to press a side surface of themirror mounting part in a horizontal direction.
 15. The light lamp ofclaim 11, wherein the light distribution module further comprises: abottom-surface hole formed in a bottom surface of the light distributioncase; and a vertically moving coupler inserted into the bottom-surfacehole, and wherein the vertically moving coupler is configured to press abottom surface of the mirror mounting part in a vertical direction. 16.The light lamp of claim 11, wherein the light distribution modulefurther comprises a support clip fixed to an inner side surface of thelight distribution case, and wherein the support clip is configured topress a top surface of the mirror mounting part in a downward direction.17. The light lamp of claim 1, wherein the light distribution modulefurther comprises a projection lens, and wherein the projection lens isdisposed between the light distribution case and the light distributioncover, and is disposed in front of the shield retainer assembly.
 18. Thelight lamp of claim 17, wherein the light distribution case furthercomprises a projection lens mounting groove, and wherein the projectionlens is configured to be mounted in the projection lens mounting groove,and is constrained in a longitudinal direction of the light distributioncase.
 19. The light lamp of claim 17, wherein the light distributioncover further comprises a projection lens mounting groove, and whereinthe projection lens is configured to be mounted in the projection lensmounting groove, and is constrained in a longitudinal direction of thelight distribution cover.
 20. A vehicle comprising: a plurality ofwheels; a power source configured to drive at least one of the pluralityof wheels; and the light lamp of claim 1.